Customer as Associated Teams in Project Template

Customer as Associated Teams in Project Template

Hi ! I have a question, I have a created a project template and I assigned teams to each task
But since there are some tasks that need to be completed by the customers, what's the best way to manage this? Since for every project we have different customers, if I create a team in the template for Customers, the contacts will not be the same
What would be the best practice for this?

Thanks