Emphasis by me:
• On an empty circle, place just one Indian figure taken from your Expedition.
• On a semicircle, place simultaneously 1, 2 or 3 Indian figures taken from your
Expedition, regardless of whether or not the area is already occupied.
In both cases, perform the Action as many times as the number of Indians you have
placed. These Indian figures do not belong to you anymore.
Notice the singular article in both cases. So that's one spot, with potentially multiple invocations of the single action.