Find public Spaces to join in your intranet and see spaces you are a member of on the Browse > Spaces page. The list of spaces displays top level spaces you can join. Sub spaces are not included. My Spaces on the right lists all the spaces you are a member of, including sub spaces.
If membership in the space is moderated, your request to join will need to be approved by a moderator. Otherwise, you will be added to the space immediately.
is requesting access to a wiki that you have locked: http://my.axerosolutions.com/spaces/5/communifire-documentation/wiki/view/21801/browse-spaces