Additional Charges

I want to be able to make the additional charges to be added per individual booking!

PLEASE can we add these in the booking with rates for that individual booking.

I have some bookings that need specific add-ons and I find I have to go into the additional charges part in the reservation section and amend the rates, which is different to the standard rates, then it messes the bookings with those standard rates.

Eg: Pool heat.... standard rate $35 but need it changed to $25, so to be able to add / change this charge within the booking or other add other charges would be great.