When an Evo user is synced with an external directory such as Active Directory (On-Prem or Azure), or Google Workspace, you won't be able to update any of the user details from your Evo admin portal.
Management of the user details within Evo for a sync user is limited to – user status (Enabled/Disabled), and multi-factor authentication status (Enabled/Disabled). All other details, such as, the user's first & last name, email address or group memberships, are maintained within the source directory.
Updates completed in the source directory, the users first or last name for example, will be updated in Evo during the next sync window.