The parents material lot size is fixed lot size , child component lot size is 2 week lot size. ( ie. 2 week = 10 Days ).
If the demand for parent material in month,after MRP run the dependent requirement for child component also getting generate only one planned order.
What are the possibilities if the parent demand in month, child requirement is needed in weekly basis .Any chance to get the child requirement in weekly by changing lot size or any other possibilities.
Create a planned order for a child material respect to parent material requirement date is not a easy with this situation.
But you can split the child material planned order to as required by using lot size FS - Fixing & splitting. assign this lot size to child material. System will ask for fixed qty, rounding value and enter the takt time.
System will split the planned order with rounding value. Planned order will go behind as you mentioned days in Takt time.