Anyway, here's how to fulfill your requirement.
First, you need to find out where are the definitions of the FactBoxes that you want to change.
You can find them in the main form definition, in Parts. There are three parts:
Once you find the parts, go to AOT - Parts - Form parts and locate the part definitions. In the definition you see property "Form" which tells which AOT form it's using. Then find that form in AOT, find the field that you want to change and change property NoOfDecimals to 0.
That would show it without decimals. But if you want to show "123.00" instead of "123.22" even when the amount is 123.22 you might need to develop a display method that changes the number for you. But I honestly can't understand why you would like to show wrong information on the FactBox. You should either show the actual decimals, or no decimals. Showing wrong decimals is wrong in my opinion. I suggest to check with the customer if they really want to show wrong data or a rounded value.
If you need more detailed help, could you share the AOT name of the form that you shared in your first screenshot?
