I'm using Minion as my add on manager, available here:

http://minion.mmoui.com/

Note: PTS users who have separate install locations for PTS and Live(beta), Minion may set itself up with your PTS Add On location when it it installs. To change it in Minion go to Options and change the Game Add On path. Navigate to the Live location using Minions "Path" button. I couldn't get this to change correctly by just editing the path line.

Once you have Minion installed then putting in add ons is just to insanely easy.

ZrMiniMap - this works. The default Alpha is 0, so at first it is invisible, go into settings and change the Alpha to some higher number (Found under Settings at the bottom of that list if items).

Hope this helps.