The Policy Groups page lists policy groups in a specific order. Policy groups higher in the list have a higher precedence. If a user is a member of multiple groups, the policy group with higher precedence applies in determining how messages are processed for that user.
The Default policy group is always the last group in the list. You cannot change the precedence of the Default policy group.
If you have enabled probe participation, the Probe Account policy group appears in the list of policy groups. If only this list does not have pre-existing custom policy groups, then Probe Account policy group is the first group in the list. You can change the precedence of the Probe Account policy group. When you choose to edit the Probe Account policy group, the Probe Accounts page appears.