Shortcut for moving windows

For sometime I've used Zooom2 to enable me to use a key combo
to enable the mouse/trackpad to slide a window around the screen.
This comes in very handy, but I'm not sure if I can combine a key trigger
with a mouse gesture to accomplished the action.
Once I hit a key combo, I then use a single finger to slide the window
in to the desired position (similarly, when using a mouse)
I set up a key sequence, but this is probably not the correct approach
since a key combination rather than a sequence is the desired trigger and I see no way of triggering a trackpad gesture.Is there a way around this?
I tried entering a keyboard shortcut, but could not enter modifier keys

In the BTT settings you can enable such a feature: