It’s sometimes hard to find good information, so here’s the diagram you require!
Once you connect everything up you will need to set the following in Cleanflight
Ports Tab (STEP 1)
UART1 = LEAVE AS IS (For USB connection)
UART2 = SBUS
UART3 = SMART PORT
Configuration Tab (Step 2)
Turn On VBAT
Turn On Telementary
Turn On SBUS
Change Receiver Mode to Serial