Use a lookup field to allow users to add a link to any content on their profile. You can limit options available in the lookup field by content type, space, author, or tag.
Text to help users when completing the field.
Choose the roles that can view this field.
is requesting access to a wiki that you have locked: http://my.axerosolutions.com/spaces/5/communifire-documentation/wiki/view/26447/lookup-field