Based on the dynamic group membership rules and the configurations provided, User 1 is a member of Group 1 only, and User 2 is a member of both Group 1 and Group 2. The dynamic group rules assign users based on certain attributes and conditions. As stated in the highly voted answer, User 1 satisfies the rule for Group 1 but not for Group 2, while User 2 satisfies the rules for both Group 1 and Group 2.