How to creat groups via active directory?
You can import Active Directory groups to create matching groups on Tableau Server, as well as a user for each member of an Active Directory group that is not already on the server.
Each user is assigned a site role as part of the import process. If any of the users to be imported exist in Tableau Server, the site role assigned during the import process is applied only if it gives the user more access to the server. Importing users does not demote site roles.
Before importing groups, to understand how multiple domains, domain naming, NetBIOS, and Active Directory user name format influence Tableau user management.
In a site, click Groups, and then click Add Groups
Type the name of the Active Directory group you want to import, and then select the group name in the resulting list.
Note: You cannot change the name of groups imported from Active Directory. The group name can only be changed in Active Directory.