first, use /ACMConfig to access the UI; from here, you can manage the four custom actions, where the standard actions are output to, and bind the ACM commands to preset buttons.

Manual binds:
ACM1, ACM2, ACM3, and ACM4 are the bindable commands used to interact with the HUD menu, from top to bottom respectively.

To reposition:
Edit lines 125 and 126 in main.lua; future versions will be repositionable in-game.

Custom commands:
You can use four custom commands. If a command does not have a slash, it is turned into a chat output command, following the output location selected in the bottom of the dialog. Make sure to save your settings.