Help: Widgets to control / affect BP

Hi

I am looking at making 3D widget as a control panel for a BP.

I can get a 3D widget to show data from this blueprint, but I would like to use it for example as an ATM machine. Withdraw cash, deposit cash, get a balance etc.

I have searched widget in YouTube, but most are about how to show health or names and alike.

Can someone point me in the correct direction, either a video or something else with an example I could follow?

Regards