In Penneo there is the option to add Microsoft Active Directory to your Penneo account.
This gives you the option to automatically add users to your account through login with your users Microsoft login.
Be aware that if there are already users on the account they can not add their user automatically by the help of Active Directory. Existing users need to have the login method Microsoft activated and then manually add their Microsoft login to the user.
See here how to activate Microsoft as a login method: Administration of Login
See here how users add their Microsoft credentials: Update login credentials
How to set it up
In the link below you find a guide on how to setup Microsoft Active Directory on your Penneo account.