Does CRMOD support fiscal year pattern of 4-4-5 5-4-4?

Our company is transitioning from a traditional calendar year fiscal calendar to a calendar with fiscal year start of 9/30/2017 using a monthly pattern of 4-4-5 5-4-4 for those familiar.  Can this be setup in CRMOD?  I see you can set the start and end date for the fiscal year, but don't see a way to setup periods like months with specific dates.  Any direction or guidance towards existing documentation will help.  By the way, we do not use forecasting at all at the moment so that isn't involved.  Thank you - Mark