Hello,
My parameters "Allows editing of distribution before posting" is activate, but I'm not able to change my disbution on the tax.

Exemple : Tax on a flight in Canada is quite complicated and I want the user to be able to change manually the amount for PST/GST, but the correct button is greyed out.


Is there a way to change that and allow the user to put 5 $ in GST and 15 $ in PST instead of the calculated amount.
Thanks