Payments depend on the length of your booking and when the booking is made.
You'll always be shown when the money is due and how much will be charged during your booking.
Some bookings need an upfront payment. Others need you to pay part of the booking and will show a date of when the next payment is due.
Hometime also requires a security deposit to be paid 4 days before check-in for Hometime Direct Bookings, Booking.com and Vrbo. Your security deposit pre-authorisation is not a charge on your card, it is a hold of funds. Should there be no issues at the property after you have checked out, the security deposit hold will be automatically released 3 days after checkout.
Hometime does reserve the right to make any necessary deductions from the security deposit amount if the property is not left in the same way it was found. You can read more about damage claims here.