How to configure a message scenario to apply two conditions simultaneously

Summary:

We are trying to execute a message scenario where multiple blocking conditions need to be true for the blocking to take effect.

Content (required):

We are using a custom property to indicate a status to indicate that work is assigned or unassigned. Assigned means (1) has a technician resource type as the assigned resource and (2) schedule date is not empty. Unassigned means (1) has a resource type that is not a technician AND (2) does not have a schedule date. These are the only criteria. The message scenario that sets to “Unassigned” has two blocking conditions tests:

1. Resource Type is 4 (Technician)
2. Activity Schedule Date Is Not Empty