Completion
How much of what they hold got finished this month.
What’s the status, and how many hours went to this client. Everything on the manager’s screen exists to answer one of those two without anyone being interrupted.

There’s a KPI on each person. It is made of four things, each weighted by you — and if you don’t want a score on people at all, you set every weight to zero and it disappears.
How much of what they hold got finished this month.
Finished on or before the due date — by the day work was finished, not ticked.
Logged hours against the monthly target they set themselves.
How close their estimates came to the actuals on finished work.
A person with almost no activity this month gets no score at all rather than a bad one — three tasks is the floor. It’s a management aid, not a stick, and it’s built to be honest about when it doesn’t know enough to say anything.
Their own tasks, their own hours, and anonymous team totals. Not their colleagues’ work.
Their own team, and the ability to move work between people on it — never across teams.
Everything in the workspace, plus the exports and the approvals. Enforced on the server, not hidden in the interface.