Dynamic Textures are used throughout a BuildR building. The main place to add them is to wallsections where you can set walls and window/door textures. There are places throughout the BuildR editor to add textures.
Dynamic Textures use their own picker UI like this. Clicking on the plus symbol will allow you to pick a dynamic texture from a list of available textures in the project.
Clicking on the X button will clear the texture field.
Clicking on the plus button will open the BuildR Asset Picker – a custom editor window that replaces the Unity Object Picker. This window will allow you to preview the dynamic textures you’re using and select the right one.