How to define a materials flow Step 01 Start to open the file: Warehouse_11.pjt. Next step will be to select (left click) Materials flow in the left project tree. Then right click and Create/Insert - Materials flow - Activities. - Give the activity a name and choose a relevant truck. - In our case first Pallet handling and the reach truck. - Go back and define the activity Picking and choose the picking truck (TPL or in later versions PPL200 Tempo). Link to: More information on materials flow. To print the whole file click on the printer and mark "print all linked documents" and then OK.