To create a group and add members to it, you use the Group Manager, accessible from the Forums Administrator page.
If you are just getting started with Forums, you may need to use the User Manager to create user accounts before adding any users to your group. See Creating a new user account.
The filter is useful when you have a large set of user accounts and you want to limit the number of user names that appear. For example, if your conference has five thousand users, you may want to avoid downloading the entire list. The default settings for the filter fields are "A" for "Name" and "No Limit" for "Registered From Last."
Enter a value in the Name text box as follows:
Use the Registered From Last drop down list box field to limit the search to members who have registered within a certain period of time. Click the down arrow to select the period you want to use.
Be sure to click on the Filter button once you have specified parameters for both filter fields, to see the group of users specified by your filter settings.