Check "Permissions Mode" in "Settings". If it is set to "Category Only" or "Category or Game" or "Category and Game" you will need to change the Category permissions.
For Category permissions, go to "Categories" and click on the little + next to the category you have created or wish to use. This will show the membergroups that have permission to access that category. Add or remove member groups as needed.
If for some reason your members still cannot play games, set "Permission Mode" in "Settings" to "None". If they can not play then you have not set the permissions properly according to the above instructions.
You can also enable/disable member group permissions for each game separately. You can also set it for member group access or category access. Make sure these are setup correctly for the user and member groups you wish to have access to just specific games.
Please remember that there are SMF permissions as well as category and individual game permissions. If you create a new member group after you install any mod you will most likely have to give that new group permissions to use your mods.
