[CovKid66]

I'm thinking you've set up the vol up/down incorrectly. Set them both up as direct mappings for the "38 up" and "40 down" respectively. Make sure you check the repeat checkbox for both.

Then add a rule...leave your stylus in until prompted, switch to the phone app, reinsert your stylus to register the phone app. When you're ready to configure those set them to direct key mappings again, and to "117 F6 - VOL UP, DONE" and "118 f7 - VOL DOWN" respectively. Enable the repeat checkbox for both here too.

Now for the back button, it is a single/double click, long press key mode. First set event set to click, and action set to "DEfault key action". Then tap the Event drop down and switch to the Long Press and set it to "emulate key press" and select "13 Enter". Nothing else to do here.