extra periods for financial year.

hi all,

I have year and period for finanacial year.

i have extra periods p13,p14,p15,p16 .

 these periods are become p13 as jan of next year,p14 as feb of next year...........in power bi.

How to control these periods in power bi.

I need to take p16 value for audit purpose.

can you please give me any Idea.

Thanks