A. Start all critical services on both nodes and select "rebalance users" in the "Presence User Assignment"

B. Start all critical services on the second node, and select the Fallback button in the "Presence Redundancy Group Configuration"

C. Go to "Presence Redundancy Group Configuration" on the Cisco UCM Administration page and select the Fallback button.

D. Go to "Presence User Agreement" on the Cisco UCM Administration page and select "rebalance users" for all users.