To Save Multiple Images Using Distributed Rendering

You must enable Execute Startup Script in the File > Preferences dialog > Operation category, to be able to save multiple images with Distributed Rendering.

Open the Save Multiple Images dialog ( Drawing > Utilities > Image ).
From the Distributed Rendering menu, turn on Use Distributed Rendering.
From the Distributed Rendering menu, turn on Include This Session to have your current MicroStation session to participate in the rendering of the job.
(Optional) In the Distributed Rendering menu, click Options to open the Distributed Processing Settings dialog to make additional changes.