Hi there,
I am Ahmed an electronics engineer, i have read you project requirements and i think that you need a PCB designer develop a raspberry pi 4 compute module with the following specs:
- 2*IINPUT USB, 1*HDMI
- 3*OUTPUT HDMI ( HMDI1 == input, HDMI3 == output, HDMI2 == switch between 1&3)
I use Kicad and i believe that i can do this work, i will offer the final result in zip file containing circuit schematic, footprints, PCB, and Gerbers ( 3D optional)
contact me for more details.