Click the Membership tab.
Click Groups in the left side menu.
Click the name of the group you wish to Edit or click the Add Group button.
Give the group a name then click the Select Members button.
Use the search and filter tools to find the users you want to add to a group.
To add a member to the group, tick the selection box next to each record or click the select all box. Once you have selected the members to be added click Save.