If you have started a message exchange with an office, you can click on the “> Propose a Booking” link, which appears at the end of their last message to you.
This will allow you to choose any date and start/end time that you want, even on days that are shown as unavailable to other offices, except for those dates where you already have a confirmed booking. You can also propose whatever hourly rate you want.
If the office accepts, then you have a confirmed booking, and all of your other applications and proposals will be canceled for that date.
You can also apply to temp jobs in the “Temp Jobs” tab in your account! Applying to a temp job proposes a booking for that date/time the office has posted for.
If the office accepts your application, the booking will be confirmed.