I'm trying to restart construction on a couple buildings where the builders were arrested. I'm at the location and own the paused facility and the city and the builders in my party, but the option isn't in the actions menu like the rules say. Am I missing a step, or are the rules different than stated?
You can add builders to any side of a building as long as there is any ground to stand on.
Leave your ship with your party, switch to the party-screen, toggle to action to "join construction", choose the builders, accept, choose the building, accept ... Violá