To use the included animations, you can merge the FX controller with your own using VRlabs' Avatar 3.0 Manager (https://github.com/VRLabs/VRChat-Avatars-3.0)
Then you can add the sub-menu to your own menu.

Alternatively you can choose to set up your controller the way you want it. :)

To be able to grab things from the bag, you can use parent constraints or something like VRlabs' Grab FX. I was not able to include an easy setup in this package.

Thank you for buying my asset!

/Polycrow