There are several tasks allowing you to command your Bricktrons.

Harvest

The Harvest task will cause Bricktrons assigned to the task to gather resources from several sources within the radius of the task;

Chopping down woods and bringing the logs to stockpiles. Mining Brimstone and Iron from surface patches. Mining stone boulders.

It is possible to stop Bricktrons from harvesting certain resources, even if they're in the task's radius, by using the toggles at the bottom right of the screen, in the taskbar.

Construction

Repair

Cleaning

Defend Area

Landscape

Quarry

Tunnel