HD Home Run Record Engine

PLEASE!!! Can someone tell me how to start the HD Home Run Record Engine? I'm running Libreelec 9.2.1 on a RP4. It seems to work fine except for the fact there's no place to specify where recordings are to be placed. The only info SiliconDust gives you will set up the engine in Rasbian which works but I can't access Rasbian once the Libreelec OS starts. I tried using SSH but am told Permision Denied when I try to run the command from the Putty shell. I feel like a mouse in a maze here!!