How do I give a contact access to multiple customer portals?

Here's how to give a contact access to multiple customer portals within different business units or accounts.

1. Add the person as a contact on each account where they need access

2. Assign appropriate portal roles for each contact (such as admin for organization-wide ticket visibility)

3. When the contact logs in, they will be presented with an "org picker", where they will have the chance to select which Account they would like to see the relevant issues from.