Sets across the top, instructors down the side. A filled cell means that person is teaching that set; a red cell means they're double-booked within it. Use "Export Season Workbook" in the header up top to bundle Staff availability, this Master grid, and every roster into one Excel file, one sheet each.

Drag any block to a different slot to move it — it snaps into place. Drop it on a slot that's already occupied and both blocks share that spot side by side. Each 15-minute panel is independent, so moving a block in one panel doesn't move it in any other. In Edit mode, drag an instructor from the legend below to add them to an open slot. The × on a block pulls it off today's map for just that one time slot — it doesn't touch their roster schedule, and the class still shows in whichever other panels it spans — and dragging that instructor back onto the same panel restores it. A panel with nothing left in it drops off the grid. "Undo" appears after any drag, drop, or delete and reverses just that last action. "Clear Map" wipes everything currently placed on the map (not the Roster) so you can rebuild the layout from scratch.

Rosters show up here once they have a day of week and a start/end date set from that roster's Edit Details (⋮ menu in the sidebar). Click a chip to jump straight to that roster.

Click "+ Add Certification" to start a new one — it's its own standalone schedule, no roster needed. Click the Dates cell to open a calendar and pick the exact dates it runs on directly (in the table or the Add form); once at least one is picked, it shows up automatically on the Calendar tab. Check Co-Teach to add a second instructor. You can also click the ★ on a Roster column to start tracking a certification for that instructor slot instead — those still show up here too, with an "On Map" checkbox (or the × on its block) to hide the block for a stretch without losing its details.

Each profile is its own mini-roster for a school board: the school's name, the days/times they come in, and how many instructors it needs. The number of slots always matches "instructors needed" — assign any of your existing Staff to fill them, same as picking an instructor on a regular Roster column.

Click AM/PM to mark availability (navy = available). The list always stays in whatever order you've dragged it into (your seniority order) — use the Filter row's AM/PM buttons instead — matches sort to the top (dimmed rows are unavailable) without hiding anyone or touching their real seniority spot. Drag the ⠿ handle — or any row — up and down to reorder the list. Someone can't be removed while they're currently assigned to a class — reassign them first on the Roster tab. Check the box on the left to select staff (Shift-click to select a range) — you can then remove or copy multiple at once.

Same idea as the Staff list — add a volunteer's name, then click AM/PM to mark when they're available (navy = available). Drag the ⠿ handle to reorder.

Link a volunteer to a specific roster, and how much of it they actually cover — the whole set, just certain days within a date range, or a hand-picked list of dates. Shows up here and as its own chip on the Calendar tab.

Permanent class settings — add a class name (like "Preschool 1" or "Swimmer 2") once here and it'll show up in the Class Bin every time you edit any roster, instead of having to re-add it each time.

People listed here can sign in and edit the shared schedule. Set a username for someone and you'll get back a one-time code (good for 7 days) — give them both, and on the site they enter the username, the code, and a password of their choosing to finish setting up. Nothing is sent automatically.

Downloads everything — every season, roster, the pool map, certifications, staff, volunteers, and the activity log — as one file you keep on your own computer. Good to grab every so often, or right before a big change you're not 100% sure about.

The server also takes its own snapshot automatically on a day the app gets opened at all (no need to remember) and keeps the most recent 30. These live on the server, separate from anything you've downloaded yourself — download one here if you need to recover from a specific point in time.

Deleting an instructor, roster, season, certification, or volunteer sends it here instead of erasing it right away. Reverse restores it exactly as it was; Approve confirms the deletion for good.

Who added, removed, renamed, or moved what, and when — including Judgment Zone decisions. Newest first.