Your availability lives in Settings → Scheduling, and controls every open slot a client can request across all your inspections.


Open slots are computed as your weekly hours, minus any blocked time (see Block time off and recurring breaks), minus your other scheduled inspections plus buffer, at least 12 hours out and up to 45 days ahead.
If you're part of an organization, an admin can set org-wide default hours in Organization Settings → Scheduling. Every member inherits those hours automatically until they customize their own: