Utility HUD AO Panel
These are the four buttons of the AO Button:
The AO Buttons
The buttons are:
AO On/Off.
A quick way to turn your uHUD AO on or off.
Groundsit On/Off
Allows you to sit on the ground, or floor; or get up if you're already seated. Requires that you have specified a valid groundsit pose in your AO notecard.
Select Groundsit Anim
Allows to select your preferred groundsit animation.
Sit Animation Override On/Off
If you're seated on an object, allows you to override any default seating anim with your preferred sit anim. The preferred sit anim must be correctly specified in your AO notecard.
Show/Hide AO Panel
You can hide (or show) the AO Panel to save space, by clicking the tiny arrow button 
located below the panel.