In The Road To Legend advanced campaign, Specifically the "blot out the sun plot", you spawn three scrolls and then the sun stone. If you collect all 4 of these items at the overlord keep you complete your objective.
My question is, can a lieutenant grab 1 scroll drop that scroll on the keep, and then go grab another scroll and drop it on the keep as well? So the overlord keep would be like the cities vaults except that they can hold infinite items?
OR
would I have to have 4 lieutenants each carrying 1 item moved onto the keep at once in order to complete this objective?
I may have overlooked something as this is our first play of the advanced campaign, but I haven't found any definitive information in any rulebooks or FAQs I've seen so far. Thanks in advance for any info.