Store Period Performance - Calendar Months

I have a new client who have just invested in P6 for the first time (R16.2)

I am in the preocess of setting up to record earned value. Not currently looking to record actuals in P6.

The clients reporting calendar is aligned to calendar months.

Do I have to set up reporting periods aligned to calendar months manually in order to store period performance or is there a quick way to do this?

'Batch Create Financial Periods' doesnt appear to have options for calendar months.

Thanks

Martin