06 Fixed % Declining Balance

Can this method of depreciation be modified to use Initial Term Apportionment = 'A' - Actual Start Depreciation Date?  I would like to use declining balance say with 8% over 25 years, however, if my asset is acquired say on 10 December, with a year end date of 31 December,  I only want the first month to calculate as 20 days, not for the full month.   How can I do this?

Thanks