The setup is as follows:
Each customer has it's own community in .LRN so we have a customer portal (the community page).
Each employee needs to be able to work on all customers. Therefore the employee needs to be added to all customers to have the permission to see each task and the projects running with the customer.
If a new customer is added, all employees need to be added to the customer's community
If a new employee is added he needs to be added to all customers.
I would love to find a way for lazy adding (add the employee only when he actually has to work on the customer, but I am not sure how this could be achieved.