Save as or export multiple prt to stp file

See this article: Article - CS28241 - How to process multiple models using Distributed Pro/batch in Creo Parametric (ptc.com)

1. Execute ptcdbatch.bat to launch Distributed Pro/batch from:
• For Creo Elements/Pro 5 0: <Load pointAbin\ptcdbatch.bat
• For Creo parametric 1.0 - 9.0: <Load PointAParametric\bin\ptcdbatch.bat
1. Select Action > New Task Group and select one or more tasks from the task list dialog and select OK. Example: PDF DRW Multi Page Export.
2. Select “Objects" node from the batch tree, Browse and select required files to be processes from Local disk space or from PDM Workspaces.
3. Select "Configuration Files" node from the batch tree, Browse and select required configuration files (config.pro).
4. Select "Output" node from the batch tree, and specify desired method of Destination Directory for Output files.
5. Select Main Task Group Node from the batch tree and set ‘Standalone' or available DSM server from the dropdown list. Use Refresh to update the list of available DSM servers in the network.
6. Select File > Save and save currently defined settings as ’.dxc file (optional).
7. After successful save, start execution using Action > Start Selected Group Or Start All Groups.
8. Once the Batch operation completes, all output files can be collected from the output directory.