Accounting Period

Hi !

First thanks to the community for your help and sorry if my question is too basic.

I would like to create a financial accounting period 14 but I didn't find any clear explanation about it.

My understanding is that in MNS100 you can select a period type for FAM and define how many period in one year for this type.
However it seems that in CRS910 the period still remain 12 periods.

Does someone know if it's possible to have 14 proper period in finance and how to set them up.

Thanks very much for your help.

Regards