diff --git a/src/components/Questions/Question.vue b/src/components/Questions/Question.vue
index 45d99c6..f4051d9 100644
--- a/src/components/Questions/Question.vue
+++ b/src/components/Questions/Question.vue
@@ -43,10 +43,13 @@
 				minlength="1"
 				:maxlength="maxQuestionLength"
 				required
-				@input="onInput"
-				@keyup="onTitleChange">
-			<h3 v-else class="question__header-title" v-text="text" />
+				@input="onTitleChange">
+			<h3 v-else class="question__header-title" v-text="computedText" />
 			<Actions v-if="!readOnly" class="question__header-menu" :force-menu="true">
+				<ActionCheckbox :checked="mandatory"
+					@update:checked="onMandatoryChange">
+					{{ t('forms', 'Mandatory') }}
+				</ActionCheckbox>
 				<ActionButton icon="icon-delete" @click="onDelete">
 					{{ t('forms', 'Delete question') }}
 				</ActionButton>
@@ -59,14 +62,10 @@
 </template>
 
 <script>
-import axios from '@nextcloud/axios'
-import debounce from 'debounce'
-import { generateUrl } from '@nextcloud/router'
-import { showError } from '@nextcloud/dialogs'
 import { directive as ClickOutside } from 'v-click-outside'
-
 import Actions from '@nextcloud/vue/dist/Components/Actions'
 import ActionButton from '@nextcloud/vue/dist/Components/ActionButton'
+import ActionCheckbox from '@nextcloud/vue/dist/Components/ActionCheckbox'
 
 export default {
 	name: 'Question',
@@ -78,13 +77,10 @@ export default {
 	components: {
 		Actions,
 		ActionButton,
+		ActionCheckbox,
 	},
 
 	props: {
-		id: {
-			type: Number,
-			required: true,
-		},
 		index: {
 			type: Number,
 			required: true,
@@ -93,6 +89,10 @@ export default {
 			type: String,
 			required: true,
 		},
+		mandatory: {
+			type: Boolean,
+			required: true,
+		},
 		edit: {
 			type: Boolean,
 			required: true,
@@ -107,11 +107,28 @@ export default {
 		},
 	},
 
+	computed: {
+		/**
+		 * Extend text with asterisk if question is mandatory
+		 * @returns {Boolean}
+		 */
+		computedText() {
+			if (this.mandatory) {
+				return this.text + ' *'
+			}
+			return this.text
+		},
+	},
+
 	methods: {
-		onInput({ target }) {
+		onTitleChange({ target }) {
 			this.$emit('update:text', target.value)
 		},
 
+		onMandatoryChange(mandatory) {
+			this.$emit('update:mandatory', mandatory)
+		},
+
 		/**
 		 * Enable the edit mode
 		 */
@@ -136,25 +153,6 @@ export default {
 		onDelete() {
 			this.$emit('delete')
 		},
-
-		onTitleChange: debounce(function() {
-			this.saveQuestionProperty('text')
-		}, 200),
-
-		async saveQuestionProperty(key) {
-			try {
-				// TODO: add loading status feedback ?
-				await axios.post(generateUrl('/apps/forms/api/v1/question/update'), {
-					id: this.id,
-					keyValuePairs: {
-						[key]: this[key],
-					},
-				})
-			} catch (error) {
-				showError(t('forms', 'Error while saving question'))
-				console.error(error)
-			}
-		},
 	},
 }
 </script>
diff --git a/src/components/Questions/QuestionLong.vue b/src/components/Questions/QuestionLong.vue
index b0e92ca..24c9c86 100644
--- a/src/components/Questions/QuestionLong.vue
+++ b/src/components/Questions/QuestionLong.vue
@@ -24,16 +24,18 @@
 	<Question
 		v-bind.sync="$attrs"
 		:text="text"
+		:mandatory="mandatory"
 		:edit.sync="edit"
 		:max-question-length="maxStringLengths.questionText"
-		@delete="onDelete"
-		@update:text="onTitleChange">
+		@update:text="onTitleChange"
+		@update:mandatory="onMandatoryChange"
+		@delete="onDelete">
 		<div class="question__content">
 			<!-- TODO: properly choose max length -->
 			<textarea ref="textarea"
 				:aria-label="t('forms', 'A long answer for the question “{text}”', { text })"
 				:placeholder="t('forms', 'Long answer text')"
-				:required="true /* TODO: implement required option */"
+				:required="mandatory"
 				:value="values[0]"
 				class="question__text"
 				:maxlength="maxStringLengths.answerText"
diff --git a/src/components/Questions/QuestionMultiple.vue b/src/components/Questions/QuestionMultiple.vue
index 6896601..964b56a 100644
--- a/src/components/Questions/QuestionMultiple.vue
+++ b/src/components/Questions/QuestionMultiple.vue
@@ -22,13 +22,14 @@
 
 <template>
 	<Question
-		:id="id"
 		v-bind.sync="$attrs"
 		:text="text"
+		:mandatory="mandatory"
 		:edit.sync="edit"
 		:max-question-length="maxStringLengths.questionText"
-		@delete="onDelete"
-		@update:text="onTitleChange">
+		@update:text="onTitleChange"
+		@update:mandatory="onMandatoryChange"
+		@delete="onDelete">
 		<ul class="question__content">
 			<template v-for="(answer, index) in options">
 				<li v-if="!edit" :key="answer.id" class="question__item">
@@ -96,13 +97,6 @@ export default {
 
 	mixins: [QuestionMixin],
 
-	props: {
-		id: {
-			type: Number,
-			required: true,
-		},
-	},
-
 	computed: {
 		isLastEmpty() {
 			const value = this.options[this.options.length - 1]
@@ -172,10 +166,18 @@ export default {
 		 * @returns {boolean}
 		 */
 		isRequired(id) {
+			// false, if question not mandatory
+			if (!this.mandatory) {
+				return false
+			}
+
+			// true for Radiobuttons
 			if (this.isUnique) {
 				return true
 			}
-			return this.areNoneChecked || this.isChecked(id)
+
+			// For checkboxes, only required if no other is checked
+			return this.areNoneChecked
 		},
 
 		/**
diff --git a/src/components/Questions/QuestionShort.vue b/src/components/Questions/QuestionShort.vue
index f6c99a8..6078290 100644
--- a/src/components/Questions/QuestionShort.vue
+++ b/src/components/Questions/QuestionShort.vue
@@ -24,16 +24,18 @@
 	<Question
 		v-bind.sync="$attrs"
 		:text="text"
+		:mandatory="mandatory"
 		:edit.sync="edit"
 		:max-question-length="maxStringLengths.questionText"
-		@delete="onDelete"
-		@update:text="onTitleChange">
+		@update:text="onTitleChange"
+		@update:mandatory="onMandatoryChange"
+		@delete="onDelete">
 		<div class="question__content">
 			<!-- TODO: properly choose max length -->
 			<input ref="input"
 				:aria-label="t('forms', 'A short answer for the question “{text}”', { text })"
 				:placeholder="t('forms', 'Short answer text')"
-				:required="true /* TODO: implement required option */"
+				:required="mandatory"
 				:value="values[0]"
 				class="question__input"
 				:maxlength="maxStringLengths.answerText"
diff --git a/src/mixins/QuestionMixin.js b/src/mixins/QuestionMixin.js
index bf0d5c4..2c0a793 100644
--- a/src/mixins/QuestionMixin.js
+++ b/src/mixins/QuestionMixin.js
@@ -18,12 +18,25 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
+import { debounce } from 'debounce'
+import { generateUrl } from '@nextcloud/router'
+import { showError } from '@nextcloud/dialogs'
+import axios from '@nextcloud/axios'
+
 import Question from '../components/Questions/Question'
 
 export default {
 	inheritAttrs: false,
 	props: {
 
+		/**
+		 * Question-Id
+		 */
+		id: {
+			type: Number,
+			required: true,
+		},
+
 		/**
 		 * The question title
 		 */
@@ -32,6 +45,14 @@ export default {
 			required: true,
 		},
 
+		/**
+		 * Mandatory-Setting
+		 */
+		mandatory: {
+			type: Boolean,
+			required: true,
+		},
+
 		/**
 		 * The user answers
 		 */
@@ -80,13 +101,24 @@ export default {
 
 	methods: {
 		/**
-		 * Forward the title change to the parent
+		 * Forward the title change to the parent and store to db
 		 *
 		 * @param {string} text the title
 		 */
-		onTitleChange(text) {
+		onTitleChange: debounce(function(text) {
 			this.$emit('update:text', text)
-		},
+			this.saveQuestionProperty('text', text)
+		}, 200),
+
+		/**
+		 * Forward the mandatory change to the parent and store to db
+		 *
+		 * @param {Boolean} mandatoryValue new mandatory Value
+		 */
+		onMandatoryChange: debounce(function(mandatoryValue) {
+			this.$emit('update:mandatory', mandatoryValue)
+			this.saveQuestionProperty('mandatory', mandatoryValue)
+		}, 200),
 
 		/**
 		 * Forward the answer(s) change to the parent
@@ -117,5 +149,20 @@ export default {
 				}
 			})
 		},
+
+		async saveQuestionProperty(key, value) {
+			try {
+				// TODO: add loading status feedback ?
+				await axios.post(generateUrl('/apps/forms/api/v1/question/update'), {
+					id: this.id,
+					keyValuePairs: {
+						[key]: value,
+					},
+				})
+			} catch (error) {
+				showError(t('forms', 'Error while saving question'))
+				console.error(error)
+			}
+		},
 	},
 }
diff --git a/src/views/Create.vue b/src/views/Create.vue
index ad6d277..060fb6f 100644
--- a/src/views/Create.vue
+++ b/src/views/Create.vue
@@ -60,14 +60,18 @@
 				@keyup="onTitleChange">
 			<label class="hidden-visually" for="form-desc">{{ t('forms', 'Description') }}</label>
 			<textarea
-				id="form-desc"
 				ref="description"
 				v-model="form.description"
+				class="form-desc"
 				:maxlength="maxStringLengths.formDescription"
 				:placeholder="t('forms', 'Description')"
 				@change="autoSizeDescription"
 				@keydown="autoSizeDescription"
 				@keyup="onDescChange" />
+			<!-- Only visible if at least one question is marked as mandatory-->
+			<p v-if="mandatoryUsed" class="form-desc info-mandatory">
+				* {{ t('forms', 'Mandatory questions') }}
+			</p>
 		</header>
 
 		<section>
@@ -181,6 +185,16 @@ export default {
 		hasQuestions() {
 			return this.form.questions && this.form.questions.length === 0
 		},
+
+		/**
+		 * Check if at least one question is mandatory
+		 * @returns {Boolean}
+		 */
+		mandatoryUsed() {
+			return this.form.questions.reduce(
+				(isUsed, question) => isUsed || question.mandatory
+				, false)
+		},
 	},
 
 	watch: {
@@ -378,10 +392,11 @@ export default {
 	header {
 		display: flex;
 		flex-direction: column;
-		margin: 44px;
+		margin-top: 44px;
+		margin-bottom: 24px;
 
 		#form-title,
-		#form-desc {
+		.form-desc {
 			width: 100%;
 			padding: 0 16px;
 			border: none;
@@ -395,10 +410,14 @@ export default {
 			text-overflow: ellipsis;
 			white-space: nowrap;
 		}
-		#form-desc {
-			min-height: 60px;
+		.form-desc {
+			padding-bottom: 20px;
 			resize: none;
 		}
+
+		.info-mandatory {
+			color: var(--color-text-maxcontrast);
+		}
 	}
 
 	.empty-content__button {
diff --git a/src/views/Submit.vue b/src/views/Submit.vue
index d4a5600..7f8645c 100644
--- a/src/views/Submit.vue
+++ b/src/views/Submit.vue
@@ -28,9 +28,13 @@
 				<h2 id="form-title">
 					{{ form.title }}
 				</h2>
-				<p v-if="!loading && !success" id="form-desc">
+				<p v-if="!loading && !success" class="form-desc">
 					{{ form.description }}
 				</p>
+				<!-- Only visible if at least one question is marked as mandatory-->
+				<p v-if="mandatoryUsed && !loading && !success" class="form-desc info-mandatory">
+					* {{ t('forms', 'Mandatory questions') }}
+				</p>
 			</header>
 
 			<!-- Questions list -->
@@ -121,6 +125,16 @@ export default {
 				return true
 			})
 		},
+
+		/**
+		 * Check if at least one question is mandatory
+		 * @returns {Boolean}
+		 */
+		mandatoryUsed() {
+			return this.form.questions.reduce(
+				(isUsed, question) => isUsed || question.mandatory
+				, false)
+		},
 	},
 
 	methods: {
@@ -170,9 +184,10 @@ export default {
 	// Title & description header
 	header {
 		margin-top: 44px;
+		margin-bottom: 24px;
 
 		#form-title,
-		#form-desc {
+		.form-desc {
 			width: 100%;
 			padding: 0 16px;
 			border: none;
@@ -186,10 +201,14 @@ export default {
 			text-overflow: ellipsis;
 			white-space: nowrap;
 		}
-		#form-desc {
-			min-height: 60px;
+		.form-desc {
+			padding-bottom: 20px;
 			resize: none;
 		}
+
+		.info-mandatory {
+			color: var(--color-text-maxcontrast);
+		}
 	}
 
 	form {