First of all, your blend file must of course contain the SEUT standard collections, specifically the Main-collection, and your model must be placed within it.

Next, you will have to ensure that all separate parts of your model are parented to a single object or empty. As you can see in the following picture, all individual parts of my example model are parented to the empty named “Model”.

Open

In order to highlight an area of your block when the player interacts with it, you first need to define an interactable area. This is done by placing a specific empty though the  Add / Context Menu by first selecting the object you wish to be highlighted and then going to Add --> Create Empty --> Add Highlight Empty.

A menu will appear in the bottom left of your 3D Viewport. Select the type of interaction you would like to be accessible through this surface. In my case, I want to add a highlight for the conveyor port so I choose Conveyor. The index (the number at the end of the emptie’s name) is needed to differentiate multiple empties of the same type and you’ll need to ensure that you don’t have two empties of the same type with the same index number. Note that the object you selected initially will also get renamed in order to facilitate the connection between the empty and the object it highlights.

Resize your empty to comfortably encompass the surface you would like to be highlighted. The empty defines the area where the crosshairs must be placed in order for the outline to appear.