I have a custom form called Vehicle Job Form. It contains a field called labour rate. I want on creation to be able to autopopulate this field with the clients choice of a labour rate. However, they must be able to change this field, and of course older records should not be effected if the labour rate is changed.
What's the best way to do this. To Clarify i dont want them to type it in every time and it needs to be updatable without me having to go into code and changing it everytime. The Client needs to be able to change this rate.
I was thinking of adding a new entity for labour rate, but how can i make this work in this situation.