Question Importing seperate FBX files with animation at runtime

Hi there!

For a project, I need to be able to load some larges 3D models at runtime, and some seperate animations as well. It consists of a soccer field, 2 players, a ball and some pons. The file setup I currently have is: 1 large FBX file with all previously mentioned models, and animation folders consisting of FBX files with rigs only.

I am using Trilib 2 to import the models at runtime. The big file works fine, but I don't know how I can "apply" the animation files to this big file. Also, naturally, the soccer player's animation should be applied to its respective model. I understand that when importing to Unity editor, the FBX filename can be used to link animations to models, but how does one do this at runtime?