What to do now?
Well, hopefully you have the basic two sections Matches and Recruitment - might be a nice idea to create your own guidelines for each e.g. recruitment policy and a match request form. Also have a go at sticky-ing them.
Upon making the new sections, the admin involved should have created a group for your clan and made you leader.
The group can be seen in..
User Control Panel -> Usergroups.
To add members into your usergroup, click the 'Manage groups' link (appears just below the usergroups button after clicking on it) and then Edit Members.
Members added to this group will receive the forum rank "[tag] Member" for joining. Please keep this group updated! :)
Use this section here for general chat, possibly post your current roster (team members) and possible chat guidelines.
Good luck,
~The Management