Task "Run Windows Command"

We have a task "File Copy". Unfortunately it is not enough. I want not only copy files but do any action on OS level.
Also we have task post-action where we can run a Windows script. Unfortunately the post action do not run in required sequence.

What if I want to run the following procedure for PDF?
1. Cleanup the target folder from previous content.
2. Create PDF files with Clarity
3. Copy the PDF files to the target folder.
4. Rename the files according the client requirements.
5. Add other files for the client, i.e. disclaimer.
6. Upload the file to the shared Google Drive folder using Clarity.

The steps in the the procedure should be performed in the specified order, no other sequence would work. The highlighted steps should be done with OS scripts. As we know the post-action scripts cannot be performed in required order, they run randomly. So with existing tools it would be difficult to arrange such procedure.

To perform such procedure I would create a Task Sequence and collected all the required steps there. There is no problem with the Clarity tasks, but how to run a Windows script? There is not such task in Clarity. It would be helpful to have one.

Alternate Solution

No Task Sequence with the Run Windows Script task required. I can create a PDF task and assign all the post-actions as as required for the procedure. I just need a task control to specify that post-actions should be performed straight in the specified order.
This solution looks nicer for me and I would prefer it.

Thank you,
Evgeny.