You mean this?
Goto cutomize.. --> mouse gesture
put it to 8 gesture and cutomize as needed
I assume you mean mouse gestures as Ravi shows in his image below. You execute a mouse gesture by dragging your right mouse button in the graphics area. Here is the related help topic:
You will see other related help topics listed at the bottom of that topic as well as in the same area of the table of contents on the left.
I hope this helps,
RC on the top toolbar and select customize, then you will see a mouse gestures tab.
There is where you can customize it. Now becareful because there is an order to it.
Meaning how you place them in the customize area depends on how they show up in the wheel.
You can have either 4 or 8 buttons in the gesture. Hope this helps you. Good luck.