To export all meshes on a single time frame, do one (1) of the following:
Click on File > Export > Meshes > All Meshes.
Run the Export All Meshes command from the search bar.
Then, navigate to and choose a folder to export the meshes to in the dialog and click on Select Folder. Each discrete 3D surface is exported as a separate file, and the files are organized in a folder structure according to object set.
Export selected mesh
To export a single mesh, first select the mesh by, for example, clicking on it in the viewer and then do one (1) of the following:
Click on File > Export > Meshes > Selected Mesh.
Run the Export Selected Mesh command from the search bar.
Finally, choose a location and filename for the PLY file in the dialog and click on Save.