https://www.simul8.com/support/help/dok ... esmovework
That is, you only assign the resource to Station 1 and 7, not the ones in between. Then on station 1 > Resources > Detail, set it to "Require here, but do not Release the resource" and on 7, set it to "Only Release here". Then, each work item will pick up a pallet at station 1 and requires it for the whole process. Only after station 7, the pallet is released again to be available for the next work item at station 1. If all pallets are in use, the work items will start queueing.