capacity planning

Hi,

In a multilevel capacity planning scenario, if I reshcdule the higher level planned/production order on the planning board, will the lower level planned/.production orders be reschduled too ? If yes then is this done automatically and using which scheduling mode, like find slot etc ?

Also another question is regarding MPS items. If I have a higher level MPS item, then when I run MPR on this item, will the entire BOM be planned or only one level below the MPS header mtl ? If yes then do we need a second planning run to plan the entire BOM? Also what if the MPS item has another MPS assembly in it ? How do we plan the entire BOM in this case ?