Can you explain a bit more on what the templates are? Is that something that is set up? or just a term of what users are doing to get the workbench set up to process.
Look in the horizontal overflow in the top right, then select allocate by part (you can use a template with the other allocations too).
From there you will see the allocation process criteria, where you select things like what warehouse/zones to pick from. If you don’t have a template set up you will need to use ad hoc.