Are you talking about depreciation?
We use accounting defaults with our workflows. You can change the depreciation of an asset if you wish, by adding that asset using the manual journal entries.
I’m afraid as we’re not accountants we can’t advise on how to do this. If you’re not familiar with Journal Entries we’d suggest you use an accountant to enter it for you.
Manual Journal Entries can be found in Accountant & Reports in the top navigation.
Hope that helps.