how to add midi device rd-800

microsoft windows 10 pro
audio usb interface: yamaha ur824
cubase 10.5
keyboard: roland rd-800

I want to use the sounds of my RD-800 keyboard in Cubase on midi-tracks but I can’t figure out the settings.
Below there is a brief description of the initial part that I managed on my own.
I would appreciate very much if someone could explain step by step how to set up the patch banks for I haven’t got a clue.

My steps so far:

open midi device manager
install device
add midi device
rd-800 not in scripts list → define new

create new midi device
name: rd-800
identical channels (selected all 16)
new device: name rd800

installed devices: rd-800
output : rd series

Thank you.