Hello! Construct's support to autotile (tileset brushes) is very limited. I've used Construct 2 and 3 for a long time. You need to create everything yourself by events. Basically, any tile with height (2 tiles-tall wall for instance), have no built-in ready-to-use support in Construct. You have to create it by events. The bad side of this is the extra work and it would work on runtime only, the bright side of this is that you just have to do it once. You can also use Tiled for map creation and import it to Construct.