I’m using Simconnect commands for all of my buttons except for “VS/FLC” on/off, can also send keybinds if Simconnect commands aren’t available. I had read somewhere that VS could be turned on/off with keybindings but I don’t see how.
For my button box I’m running SimDashboard on an Android tablet. I originally had purchased SimDashboard for use with American Truck Simulator and my racing sims but there’s also enough MSFS2020 functionality for my purposes.