Why are  you still struggling with your very first question on this forum? https://proconnect.intuit.com/community/proseries-tax-discussions/discussion/what-simple-devices-i-n...

You should have a network license and enlist some professional help for the network. 

https://www.instructables.com/Peer-to-Peer-Network-Sharing/ if you really want to do it DYI

I believe your current set up is a real disaster in the making. "I am not confident when the user makes any mistake in public " says it all  

Perfect . Thank you

I filled out all information in each PC and thought no need to disclose my identity to my tax prepare and no need to disclose this tax prepare to others . I am worried to delete and interrupt my service . Thank you for your help. BIG HELP

Because we are still on PC stand alone and not using networking sharing yet. 

Reason is COST 

We are step by step to move forward. 

Thank you for your help

Penny-wise, pound-foolish.  

Thank you abctax55 for your advice

>Actually the issue is not from cost

>When we started to set up, we have new customer on board  support who guides us to do that .

At that point we dont have private networking setting (regarding previous comment from George). Time by, I see this issue and want to contact with Proseries support how to fix this. I thought this was the way how proseries is set up 

>Lately we have offered from CLOUD that is partner with proseries . Per my understanding Cloud networking share is additional feature after my set up (not thing change from my set up in PC) .

We have not enrolled CLOUD yet for some reasons: cost and new features that my team is still too young with Proseries and we have to learn and adjust with the new features

Again, thank you