I am creating Agent-Level Thresholds for agents to auto-assign tickets in a Load-based Round Robin rule.

I am unable to set the same number of Open tickets for agents when setting their Thresholds.

For exampel:
Agent 1 = 10

Agent 2 = 25

Agent 3 = SHOULD BE 25 but I must choose 24 or 26

Why is this and how can I set the same number?