Use this tab to 
  group the project items required by the delivery project by specifying a period 
  or date interval within which
  the required dates of the project item should be in. The 
From and 
  To fields show the
  date, weekday and week number. 
  When the dates are set, populate the window by selecting the menu option Populate Part
  Groups. You can also reset the dates by selecting the menu option Reset 
  Dates.
To see the details for a particular project item, you can select the part from 
  this tab and then the menu option Project Item. 
Plan Project Material Demand
Change
  Pegged Requisitions
Transfer
      Part To Inventory
View Part Procurement Info