We have the need to set a float from a certain date. If we are at the 23rd of the month and we pay landlords on the 24th, and we have work we now will be carried out in a weeks time, we would have to remember to go back in a weeks time and set the float. It would be useful to be able to set the date a float change comes into effect, and avoiding having to set reminders to carry out an action (it will interrupt the workflow on certain tasks).