User Form-Role Permission Tab

Hy,

In user master, Role Permissions tab does not appear, moreover security setting section also not appear (to view website/system user)

Any idea to enable them? What could be reason that these had been disappeared?

Please check if any client script has been applied.

Also, verify if any field permissions have been set.

Try adding level 1 Read, Write permission to the user if the user does not have a system manager role.