I believe you are referring to group domain accounts? If that is the case, from a basic point of view you will need to create a network group and include the 35 user’s network accounts in this group. You can then create a login on the SQL Server ‘PRJ-ACCT8’ for the group.

Some things to look into, if you have an Active Directory:

http://technet2.microsoft.com/windowsserver/en/library/c11d0f80-8f42-4ddd-ac35-2e6a204ebb941033.mspx?mfr=true

Sql Server how to for creating logins:

http://msdn2.microsoft.com/en-us/library/aa337562.aspx

Good Luck,

David