The button in the Ultraxion and Madness of Deathwing encounters is not the same as the power bars in previous raids! This addon will do nothing for those. Luckily I do have another addon (BetterExtraActionButton) for moving that button :p
Makes the PlayerPowerBarAlt frame movable. This is the frame for quests and instance encounters that show a power bar specific to the event. This includes sound on Atramedes, corruption on Cho'gall, Lord Rhyolith's direction, and feathers on Alysrazor as well as the counter and timer bar used in Dark Moon Faire games.
There is no config. Right click on the frame to make it movable, then drag it to where you want and right click again to lock it in place. While it is unlocked, you can also use your mouse wheel over the frame to adjust it's scale and reset it back to its default scale by pressing the middle mouse button.
You can toggle showing the status text by holding shift and left clicking on the frame while it is unlocked. By default the status text will show when mousing over the bar.
To adjust it outside of a raid encounter, you can type
/bpba toggle and pretend you're in the Maw of Madness in Twilight Highlights and move the "Digestive Acids" bar around. (pretty much where I was the entire time I wrote this)
If you find the frame some place it shouldn't be, you can type
/bpba reset to move it to the center of screen.
And if you find yourself accidentally clicking on it all the time, you can type
/bpba lock to make it ignore clicks.
A quick note: Unit frame addons like to disable the bar (to show on your player frame), so if you're not seeing it, that's more than likely why.