Material Planned Cost Distribution periodwise

Hi All,

Please Explain How to distribute the Material Planned Cost Period Wise, Once the Material will assign to the Internal Activity with activity duration will be different Period. As we distribute work center cost of the Internal activity , Can we distribute same way , Please expalin how we can distribute the Cost of Material as the material cost is taking as per the requirement date, but clients requirement is the planned cost should distribute period wise. Request you all to spare your valuable time for solution .Thanks to all.

Regards

RK