Need Help With Formula for Cells Copying Each Other

Alright i'm going to try to explain this but its a little confusing given the circumstances of what i need

I have a excel sheet that is for scheduling tradesman during certain time slots. I have it set up based on trade. However, some of the tradesman cross trades.

So when i fill a slot for Handyman A say for 8am I need his linked cell in Cabling A for 8am to also fill in.

And vice versa, if i fill Cabling A @ 12pm, Handyman A @ 12pm needs to also fill in.

I have some guys that cross into 3 or 4 different trades too. So he would have 4 cells that need to be linked to each other.

Is this possible? Any help or suggestions?

Thanks in advance everyone!

See below

Trades/Techs AM (8-12PM) PM (12-4) AM (8-12PM) PM (12-4)
HVAC 1 X X
HVAC 2 X X
HVAC 3
HVAC 4

Plumbing 1 X X
Plumbing 2
Plumbing 3
Plumbing 4
Plumbing 5

Electrical 1 X X
Electrical 2 X X
Electrical 3
Electrical 4
Electrical 5

Handyman 1
Handyman 2
Handyman 3
Handyman 4
Handyman 5

Test Sheet.xlsx

Nvm let me attach, i think that's what you meant.

The red guys are linked. So when i x one of their time slots i want all of them to x out. Same thing with the yellow.

I have them manually linked on this one to show you what i'm trying to accomplish.