The Online Staff Leave Planner. WhosOff is the easy-to-use online staff holiday planner. Why not take a tour, or check out a complete list of features, or watch our intro video. Approve leave requests in a couple of clicks. It’s so simple to use, you can be up and running in minutes! Let us show you how easy it is, call us for a free demonstration on +44 (0)1227 812930. "We signed up to WhosOff ov