Admins need the ability to select multiple agents and replace a specific time block across all of their schedules in one action, regardless of what each individual currently has in that slot. Example: It's all-hands on deck from 3:00–3:30 PM. I want to select all agents, define that window, and replace whatever is currently scheduled there with a new activity, without touching lunches, breaks, or time-off events. Expected behavior: Retrieve all segments across a selected employee group for a defined time range. View and edit them in a single worksheet before committing Bulk replace or delete the segment across all agents in one save action Preserve protected event types (lunches, breaks, approved time off) Handle conflicts/errors inline before saving