Explanation
R80 can be installed only on GAIA OS.
Supported Check Point Installations All R80 servers are supported on the Gaia Operating System:
* Security Management Server
* Multi-Domain Security Management Server
* Log Server
* Multi-Domain Log Server
* SmartEvent Server
References:

Explanation/Reference:
Explanation: Users
Use the WebUI and CLI to manage user accounts. You can:
Add users to your Gaia system.

Edit the home directory of the user.

Edit the default shell for a user.

Give a password to a user.

Give privileges to users.

Reference: https://sc1.checkpoint.com/documents/R76/CP_R76_Gaia_WebAdmin/73101.htm

Explanation/Reference: https://sc1.checkpoint.com/documents/R80/CP_R80_SmartDashboard_OLH/html_frameset.htm?
topic=documents/R80/CP_R80_SmartDashboard_OLH/ud_B7RJG2xrUQywsBK5buA2

The users and user groups are arranged on the Account Unit in the tree structure of the LDAP server. User management in User Directory is external, not local. You can change the User Directory templates. Users associated with this template get the changes immediately. You can change user definitions manually in SmartDashboard, and the changes are immediate on the server.