You can <b>Search</b> for a member on your forum from here. Just enter any or none of the fields to bring up the results. On the next page you can edit their account by clicking the drop-down next to their name.<br />
To <b>Prune / Mass Delete</b> members, simply select <i>Find Members to Prune (Mass Delete)</i> for the field <i>Type of Search</i>. You will also need to select some restrictions on who to prune, so fill in the other fields as desired.