diff --git a/apps/api/prisma/schema.prisma b/apps/api/prisma/schema.prisma
index ceea55bb5..1d265937e 100644
--- a/apps/api/prisma/schema.prisma
+++ b/apps/api/prisma/schema.prisma
@@ -99,6 +99,7 @@ type GroupSettings {
   idValidationRegex             String?
   idValidationRegexErrorMessage ErrorMessage?
   subjectIdDisplayLength        Int?
+  minimumAge                    Int?
 }
 
 model Group {
diff --git a/apps/web/src/components/StartSessionForm/StartSessionForm.tsx b/apps/web/src/components/StartSessionForm/StartSessionForm.tsx
index be271c85e..4b3879738 100644
--- a/apps/web/src/components/StartSessionForm/StartSessionForm.tsx
+++ b/apps/web/src/components/StartSessionForm/StartSessionForm.tsx
@@ -15,10 +15,6 @@ import { z } from 'zod/v4';
 
 const currentDate = new Date();
 
-const EIGHTEEN_YEARS = 568025136000; // milliseconds
-
-const MIN_DATE_OF_BIRTH = new Date(currentDate.getTime() - EIGHTEEN_YEARS);
-
 type StartSessionFormData = {
   sessionDate: Date;
   sessionType: 'IN_PERSON' | 'RETROSPECTIVE';
@@ -46,6 +42,10 @@ export const StartSessionForm = ({
   onSubmit
 }: StartSessionFormProps) => {
   const { resolvedLanguage, t } = useTranslation();
+  const minDateOfBirth = currentGroup?.settings.minimumAge
+    ? new Date(currentDate.getTime() - currentGroup.settings.minimumAge * 31556952000)
+    : undefined;
+
   return (
     <Form
       preventResetValuesOnReset
@@ -177,8 +177,19 @@ export const StartSessionForm = ({
             .optional(),
           subjectDateOfBirth: z
             .date()
-            .max(MIN_DATE_OF_BIRTH, { message: t('session.errors.mustBeAdult') })
-            .optional(),
+            .optional()
+            .refine(
+              (date) => {
+                if (!date || !minDateOfBirth) return true;
+                return date <= minDateOfBirth;
+              },
+              {
+                message: t({
+                  en: `Subject must be above age of ${currentGroup?.settings.minimumAge}`,
+                  fr: `Le sujet doit être âgé de plus de ${currentGroup?.settings.minimumAge}`
+                })
+              }
+            ),
           subjectSex: z.enum(['MALE', 'FEMALE']).optional(),
           sessionType: $SessionType.exclude(['REMOTE']),
           sessionDate: z
diff --git a/apps/web/src/routes/_app/group/manage.tsx b/apps/web/src/routes/_app/group/manage.tsx
index a5275c13a..9d0e75ecc 100644
--- a/apps/web/src/routes/_app/group/manage.tsx
+++ b/apps/web/src/routes/_app/group/manage.tsx
@@ -32,7 +32,9 @@ type ManageGroupFormProps = {
       accessibleInteractiveInstrumentIds: Set<string>;
       defaultIdentificationMethod?: SubjectIdentificationMethod;
       idValidationRegex?: null | string;
-      subjectIdDisplayLength?: number;
+      minimumAge?: null | number;
+      minimumAgeApplied?: boolean | null;
+      subjectIdDisplayLength?: null | number;
     };
   };
   onSubmit: (data: Partial<UpdateGroupData>) => Promisable<any>;
@@ -86,6 +88,40 @@ const ManageGroupForm = ({ data, onSubmit, readOnly }: ManageGroupFormProps) =>
             fr: "Paramètres d'affichage"
           })
         },
+        {
+          fields: {
+            minimumAgeApplied: {
+              kind: 'boolean',
+              label: t({
+                en: 'Apply Minimum Age For Subjects',
+                fr: 'Appliquer un âge minimum aux sujets'
+              }),
+              variant: 'radio'
+            },
+            // eslint-disable-next-line perfectionist/sort-objects
+            minimumAge: {
+              deps: ['minimumAgeApplied'],
+              kind: 'dynamic',
+              render: (data) => {
+                if (data.minimumAgeApplied) {
+                  return {
+                    kind: 'number',
+                    label: t({
+                      en: 'Minimum Age',
+                      fr: "L'âge minimum"
+                    }),
+                    variant: 'input'
+                  };
+                }
+                return null;
+              }
+            }
+          },
+          title: t({
+            en: 'Age Limit Settings',
+            fr: "Paramètres de l'âge"
+          })
+        },
         {
           fields: {
             defaultIdentificationMethod: {
@@ -150,15 +186,32 @@ const ManageGroupForm = ({ data, onSubmit, readOnly }: ManageGroupFormProps) =>
       initialValues={initialValues}
       preventResetValuesOnReset={true}
       readOnly={readOnly}
-      validationSchema={z.object({
-        accessibleFormInstrumentIds: z.set(z.string()),
-        accessibleInteractiveInstrumentIds: z.set(z.string()),
-        defaultIdentificationMethod: $SubjectIdentificationMethod.optional(),
-        idValidationRegex: $RegexString.optional(),
-        idValidationRegexErrorMessageEn: z.string().optional(),
-        idValidationRegexErrorMessageFr: z.string().optional(),
-        subjectIdDisplayLength: z.number().int().min(1)
-      })}
+      validationSchema={z
+        .object({
+          accessibleFormInstrumentIds: z.set(z.string()),
+          accessibleInteractiveInstrumentIds: z.set(z.string()),
+          defaultIdentificationMethod: $SubjectIdentificationMethod.optional(),
+          idValidationRegex: $RegexString.optional(),
+          idValidationRegexErrorMessageEn: z.string().optional(),
+          idValidationRegexErrorMessageFr: z.string().optional(),
+          minimumAge: z.number().int().positive().optional(),
+          minimumAgeApplied: z.boolean().optional(),
+          subjectIdDisplayLength: z.number().int().min(1).optional()
+        })
+        .check((ctx) => {
+          if (ctx.value.minimumAgeApplied && !ctx.value.minimumAge) {
+            ctx.issues.push({
+              code: 'custom',
+              input: ctx.value.minimumAge,
+              message: t({
+                en: 'Please enter an age',
+                fr: "Entrez un âge s'il vous plait"
+              }),
+              path: ['minimumAge']
+            });
+          }
+          return;
+        })}
       onSubmit={(data) => {
         void onSubmit({
           accessibleInstrumentIds: [...data.accessibleFormInstrumentIds, ...data.accessibleInteractiveInstrumentIds],
@@ -169,6 +222,7 @@ const ManageGroupForm = ({ data, onSubmit, readOnly }: ManageGroupFormProps) =>
               en: data.idValidationRegexErrorMessageEn,
               fr: data.idValidationRegexErrorMessageFr
             },
+            minimumAge: data.minimumAgeApplied ? data.minimumAge : null,
             subjectIdDisplayLength: data.subjectIdDisplayLength
           }
         });
@@ -207,7 +261,10 @@ const RouteComponent = () => {
       defaultIdentificationMethod,
       idValidationRegex: settings?.idValidationRegex,
       idValidationRegexErrorMessageEn: settings?.idValidationRegexErrorMessage?.en,
-      idValidationRegexErrorMessageFr: settings?.idValidationRegexErrorMessage?.fr
+      idValidationRegexErrorMessageFr: settings?.idValidationRegexErrorMessage?.fr,
+      minimumAge: settings?.minimumAge,
+      minimumAgeApplied: typeof settings?.minimumAge === 'number',
+      subjectIdDisplayLength: settings?.subjectIdDisplayLength
     };
     for (const instrument of availableInstruments) {
       if (instrument.kind === 'FORM') {
diff --git a/packages/schemas/src/group/group.ts b/packages/schemas/src/group/group.ts
index e73cfd053..48f04c462 100644
--- a/packages/schemas/src/group/group.ts
+++ b/packages/schemas/src/group/group.ts
@@ -13,6 +13,7 @@ export const $GroupSettings = z.object({
       fr: z.string().nullish()
     })
     .nullish(),
+  minimumAge: z.number().int().positive().nullish(),
   subjectIdDisplayLength: z.number().nullish()
 });