The Type event in the Agent Timestamps report includes AGENT_AVAILABILITY/FOCUS_ENTERED and AGENT_AVAILABILITY/FOCUS_EXITED which indicates when an Agent entered or excited Focus mode. Use the delta between the two metrics to calculate time spent in Focus mode.
If you have Insight Builder, it’s even easier to see how long Agents are spending in Focus mode which available in the Agent Metrics dataset
Agents who may be spending too much time in Focus or using it outside of its primary use case would see their occupancy numbers decrease as they'd be handling fewer Contacts and helping fewer Customers. Agents spending too much time on Focus may display higher handle times and after Contact time.
Staying in Focus mode for an extended time after a Contact ends (e.g., after a phone call) would increase their After Contact Work Time number. If an Agent put themselves into Focus while not handling a Contact, that will impact their occupancy numbers (important if you measure occupancy), as no additional work will be routed to them while they are in Focus mode.
If you have Insight Builder
Focus Time metrics are also available in the Agent Metrics dataset in Insight Builder, giving Analysts the ability to see a total value of how much time an Agent spend in Focus during a particular window.