To create new content, select one of the many Content Types from the Create menu, and a modal will pop up for you with Spaces for you to select the desired space you want to create content in. If you have the proper permissions, you will be able to create content in the space, otherwise the space will not be listed in the modal. You can search for the space you want using the search bar.
Create a Space
is requesting access to a wiki that you have locked: http://my.axerosolutions.com/spaces/5/communifire-documentation/wiki/view/21803/create