View of all users on the login screen

Hello,
We have devices that are connected to Azure Ad via Azure AD join. Several users are working on the devices. So that the users do not always have to enter their account name, I would like all users to be displayed on the login screen.

On unmanaged machines the following works fine.

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\UserSwitch
Enabled 0

According to the instructions, this OMA URI should actually work in Intune.

./Device/Vendor/MSFT/Policy/Config/ControlPolicy/ShowAllUsers

Integer
0

Unfortunately, however, only the last logged-in user is still displayed.

Even executed scripts to change the regkey on the devices do not work.

Does anyone know where it is hidden in the Intune device configuration profile or what other options I have ? Thank you.