Haliken

Because auras and epic 1.5/20 clicks go into the short duration buff window, it's now quite easy to use up almost all 12 slots. After the 12th, they overflow into your normal buff window.

Anyhow, it's definitely possible to do a horizontal window. The easiest way to get them to go where you want is using autostretch and using the autostretch set of alignment numbers to force the icon into the position you want.

Doing it this way (using autostretch) you can have them fill in in any order you want; left-to-right, right-to-left, outside-to-inside, etc.

Also, max buffs is still 21. You can get a total of 6 extra slots via AA and DoN progression.

Enok