How to send unconventional commands

I've been working for a while, and my newness to Better Touch Tool seems to be getting to me. How do I send a command using function keys, as opposed to cmd/alt/fn/ctrl. For example, if I were to send the command "F3 A". I have tried just using the "Send Keyboard Shortcut" for the the F3 key and A key, but BTT seems to release the F3 key before hitting A. Additionally, BTT closes its panel before the A key can be pressed. Any insight is good insight, and will be deeply appreciated :slight_smile: