So I have a People column in a form. Everything works, if I edit the item it shows me the user added to in people column and I can search and re-select another user and save.
But when I then want to limit the people that you actually can select from I use the following.
Item = Office365Groups.ListGroupMembers("Some Group ID here").value
Now I can only select from users that are in the group I specified, but saving the form results it no change even if I change the people I select. Also when I open a item in edit form, it no longer displays the user from in the people column even if I can see it's there in the SharePoint list