For the office
Driver Availability is the people calendar: every guide as a row, the days ahead as columns, and each cell saying whether that person can work that day. Pure people-planning; no tours are assigned here. It is where days off, vacations and sick days are recorded, and the board reads it before offering anyone a tour.
A grid of your guides against the days ahead. It opens on Month, the next thirty days, because vacations get planned weeks ahead; Week shows the next seven with full day names. The window only looks forward, today onward, and the arrows step it a period at a time. The bottom row counts who is Available each day, and turns red on a day nobody is.
Each off state has its own colour, and the legend above the grid shows all four. In month view the narrow cells shorten the words to their initial, so a painted vacation reads as a run of V cells.
A guide marked off simply stops being offered: on that day's board, their name is not in the GUIA choices any more, whichever of the three off states it was. Tour Planning is untouched, because planning decides which tours run, not who runs them; the person question is asked on the board, and that is where availability answers it.
Yes, for today. The board's DISPONIBILIDAD panel lists everyone in three rows: Available, Off today and On duty. Tap a name under Available and they move to Off today; tap them there and they are back. People under On duty already hold a tour today, so they cannot be marked off until the tour is reassigned.
The board and this screen are the same record: a day marked off from the board shows up here as Vacation on today's column, and anything set here shapes the board's lists the moment it saves.