Only read user for Plesk UI
Add the possibility to create an admin user with read-only permissions. He will be able to see all the options, but can't change anything.
For first line support purposes.
Plesk Tech Support commented
Add ability to create demo accounts where users can only see but not change anything.
Right now it's possible to restrict using permissions in service plan, but ability to change password and add/remove files remains. It would be great to remove these too.