Invoke Parallel deployments using OOTB PLC workflow

System

Environment: TS 7.1 (Windows 2008)

We are trying to achieve parallel deployments using the OOTB PLC workflow, here is the use case:
1. User 1 has initiated the workflow with 10 files and currently its in the deployment task. In the meantime User 2 has initiated another workflow with different set of files.
2. Current behavior - User 2 deployment task will kickoff only after User 1 deployment task is completed, until its completed the deployments are queued for the second user.
3. Expected behavior- User 2 deployment task shouldn’t wait for User 1 deployment task to complete, i.e deployments should happen in parallel.

I can understand why Interwoven has recommended “Serial” deployments against “Parallel” deployments as to avoid overwriting of files if the same file is present in multiple workflows. In our project we are checking that condition and not allowing files to be present in multiple workflows.

Can someone provide some pointers on how to achieve the above functionality.

I have gone through some devnet posts and i could see people have implemented the parallel deployments through CLT parameter, has someone implemented this using PLC workflow OOTB deploy tasks?

Thanks,
Arun.