An Open Shift is a shift you still need someone for. On HR Tools > HR > Open Shifts a manager creates the request (role, date, time, notes). Sprwt emails every active employee who has that job role (or everyone, for "Any Role"). Employees open Available Shifts, click I'm Available, and the manager sees the signups and clicks Add to Schedule for the person they choose, which creates the real shift and marks the request Filled. Statuses are Open, Filled and Cancelled.