Permissions to view/edit a field in an object's user interface

To make an object field available only for some user groups, you need to check if the current user belongs to the required group when displaying a field on the form. In the markup below, the Notes field will be visible only to the users who belong to the Administrators group:

@using EleWise.ELMA.Security.Managers;
@using EleWise.ELMA.Security.Services;
@using EleWise.ELMA.Security.Models;
<table>
@{
    var admins = UserGroupManager.Instance.Load("Administrators");
    var inAdmins = UserGroupManager.Instance.GetUsersByGroup(admins.Id).Any(a => a == AuthenticationService.GetCurrentUser<IUser>().Id);
    if(inAdmins)
    {
        @Html.EditableProperty("Notes")
    }
}
</table>

If you need to display the field as read-only for certain groups, then instead of the EditableProperty method use the Property method.