Choose the caption bubble to begin. If you want to upload a custom bubble or alternative image then submit the caption first, then edit the comment and attach a "Place img". Once the image is approved you can use it by editing the caption again.
No, if you look at the previous picture there's a girder-type thing at the end of the desk. It's the end computer, but this one is next to another desk :)
is this cooller's setup?