Strategy 63 or 60 Planning with Planning material -BOM lower level

In strategy 63/60.

The Planning material is used in FG (Header level material).

When the Sales order  is entered on the FG, it consumes the forecast demand of the "Planning material".

The requirement is that , the "Dependent t requirement "at the lower level material (Material Below FG in BOM) should consume the forecast of the "Planning material."

I used the planning material at the "Lower level material " ,however its not happening.

Please help.