How do you add signatures SW, GW and CW??

have clicked everything I can see to add info at the bottom of my posts; clearly I'm technologically challenged.

Click on the little icon of the gear on the top-right corner of the page, next to the pink plus sign.

Then click "settings."

Click "message board" at the top of the page.

Add whatever you like for your signature, then click "save" at the bottom of the page.