Board Thread:General Discussion/@comment-46222768-20200630204544/@comment-168424-20200701003438

Make an admin and change user rights: Special:UserRights.

To block just go to Special:Contributions/username (or go to their profile page, click the Contributions tab and look for "block" link").

Both block and user rights can be done from Contributions tab...

Look for:
 * For username ( wall &#124; block &#124; block log &#124; uploads &#124; logs &#124; deleted user contributions &#124; user rights management... )