Is it possible to create different customer permissions for different channels?

[Sami Aqel]

The current scenario is, my customer permissions is set to "Customers my team adds to the project" for access to the Portal and sending requests. Now only the added customers can raise request either per email  or the portal. 

What is needed: anyone can raise a request per email and only customers my team adds to the project can access the portal. Is this possible? 

Thanks! 

[Fahad Siddiqui]

@Sami Aqel  can you try going in  Customer permissions

Who can raise requests?