Simply add a bar similar to the aura and the shapeshiftbar to the right of the pet bar.

This bar contains buttons to cast the aspect of the hunter (the bar is only visible for hunters)

You can use the context menu to change many settings.

/floaspectbar panic|reset

Reset all settings and reload the UI

/floaspectbar unlock

Unlock the bar so you can move them.

/floaspectbar lock

Lock the bar in place

/floaspectbar auto

(default) use an automatic placement of the bar at the bottom right of the screen. Detect optional action bars, XP bar, reputation bar.

/floaspectbar scale <ratio>

Scale the bar by a <ratio>.

/floaspectbar borders

Show borders (default)

/floaspectbar noborders

Hide borders

/fab is an alias for /floactionbar