General advice: avoid contacting the admins for these simpler tasks. They already have a lot on their plate.
If you're unsure of who to contact for these tasks, you can find out by clicking on the hamburger icon ≡ in the upper right hand corner of our site and then clicking on "Who to contact" under the "Help" section.
Here are the mods you can contact:
(It is a little outdated at the moment but still accurate.)
Cog/Greed and Hikaru are primarily in charge of this, but any other mod will work, too.