CCA is an "optional" claim, meaning you can choose how much, if any, you would like to claim in any given year.
You do not have to claim the maximum amount of CCA in any given year. You can claim any amount you like, from zero to the maximum allowed for the year. For example, if you do not have to pay income tax for the year, you may not want to claim CCA. Some taxpayers choose to not claim CCA when their business is starting out and use it in future years when their tax liability is higher, while others will claim it if their refund is increased.
For these reasons, the software does not calculate an optimal or best amount to claim.