uses
  Gorilla.DefTypes,
  Gorilla.G3D.Loader,
  Gorilla.DAE.Loader,
  Gorilla.FBX.Loader,  
  Gorilla.GLTF.Loader,
  Gorilla.GLB.Loader,    
  Gorilla.OBJ.Loader,
  Gorilla.STL.Loader,
  Gorilla.Babylon.Loader,
  Gorilla.PLY.Loader,
  Gorilla.SKP.Loader,
  Gorilla.X3D.Loader, 
  Gorilla.X3DZ.Loader,   
  Gorilla.X3DVZ.Loader, 
  Gorilla.AssetsManager,
  Gorilla.Model;
  
[...]

var FAssetsManager : TGorillaAssetsManager;
    FPackage : TGorillaAssetsPackage;
    FModel : TGorillaModel;

// in our form (TForm1) we added a field named "FModel"
procedure TForm1.FormCreate(Sender: TObject);
begin
  // setup the assets manager and load an existing package from file
  FAssetsManager := TGorillaAssetsManager.Create(Self);
  FPackage := FAssetsManager.LoadPackageFromFile('C:\Temp\mypackage.zip');
  FPackage.DisplayName := 'MyPackage';
  
  // prepare the model for loading from package
  FModel := TGorillaModel.Create(GorillaViewport1);
  FModel.Parent := GorillaViewport1;
  
  // start linking to assets manager like at designtime
  FModel.AssetsManager := FAssetsManager;
  FModel.PackageName := 'MyPackage';
  FModel.Source := 'myfile.dae';
end;