Assign more than one customer to a project

Just I am new with ErpNext, and still study it,

I need to Assign more than one customer to the same project

you would have to add a custom table in which you can link several customers.
Please remember though, that some current funktions like parsing the customer into the form when creating might not work.

Thanks for reply
What i did, adding a new field to choose 2nd client

But the idea his assigned project not appears on the customer’s profile (The New customer Only)

Is there a fix to this problem??

I need asolution for this problem too?