In the last couple of towns I tried to build, whenever I tried to build a crop it would only ever have one person working on actually building the crop field, even if 5 builders were assigned to the task. I think the one person working on building the farm is the actual farmer assigned to the field. I don’t know if that’s how it is supposed to work, that the farmers build the initial field instead of builders, but it seemed weird that the field showed that 5 builders were assigned to build it when the only one building it was the farmer assigned to it.
(Also, loving the game so far!)