Can you Reserve Materials for a Work Order at a Supplier type of operation?

Summary:

The first operation is a supplier type operation but there are items to be issued to that operation. However, with Supply Type set as Supplier, it isn't working to manually issue material.

Content (required):

Should the Supply Type be set to Push in order for this to work? Or is there another way to issue material to a Supplier operation?

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):