Allow for multiple modifier keys in dual-function.

[beyond2001]

Is your feature request related to a problem? Please describe.
Sometimes one key needs to be mapped to more than one modifier keys when held down and just send one key when tapped.

Describe the solution you'd like
Allow for multiple modifier keys in the dual-function feature

[xel-x]

Missing this feature as well.
I'd need this or the hyper-modifier (Alt+Shift+Control+Command).

[alexpargon]

@beyond2001 @xel-x

Interesting, i will push this issue to the FW team so they can check upon it to see if it is feasible