How to access shell in opencore system

I am inexperienced with OpenCore - I have a working system with Success' href='/2020/12/install-macos-catalina-on-supported-pc.html'>Catalina but I need to access shell to use bcfg to remove multiple boot entries in the UEFI. How can I make this option visible on startup (alongside the other boot options from OpenCore)?. I tried using an old clover EFI but only the cursor was visible in shell. Thx!

Author: @roamer2000