Add 1 hour timeslots with the "Insert meeting times" button

Right now, Front's "Insert meeting times" button only suggests 30-minutes timeslots, even when 1 hour-long or 2 hour-long timeslots are selected, with the matching duration of the timeslot selected in the modal.

I think the inputted duration of a call, coupled with the correct parameter, should output meeting slots that answer to this duration.