As the settlement grows, I often want to go from having a minimal number of workers in each building, to filling them up. Having to click on every production building to see if I can add more workers could be made easier if there was an icon/button/something, like there is for finding idle buildings.
Hi! I think there is already something in the game that addresses this. You can hold down the ALT key to activate the Worker Overlay. It displays worker slots above all buildings in your settlement and allows you to easily assign workers to them by clicking on a free slot (you can also use the scroll wheel to change the active species).