Once you are in edit spaces mode, you can highlight as mentioned. If you want them to be labeled, I believe the easiest way would be to create measurements and control the caption to display the name space. I only know of the manual way to do this, but maybe someone who works more with spaces would have a better idea.
Please note:
This action will also remove this member from your connections and send a report to the site admin.
Please allow a few minutes for this process to complete.