Journal → Comm how-to tutorial!
TAGGING YOUR ENTRIES. So let's say you posted but forgot your tags (Oh no!), or replied to another post on the network. DON'T PANIC...! Just find the EDIT TAG button.
When you click that, you'll be taken to the EDIT TAG page. Scroll down, find and select your character tags. (No different than if you were tagging in smash_logs)
Then click the Save Changes button. All done!