Total Commander

Hu Guys,
I've sideloaded Total Commander onto my Sony Android TV and it works great "up to a point"
I need to reveal hidden files. but I can't work out how to access the Total Commander Settings Menu.
I've only got my TV remote to use with Total Commander, so if anyone can help, I would much appreciate it.

There should be a button with 3 dots on it in the lower toolbar. If not, go to the + button and add a new button:
Function type: Internal command
Command: 500