No Effect of BPM configuration "Allow all participants to route task to other participants"

Summary

Allow all participants to route task to other participants

Content

Hi Fellow Practitioners,

Hope your near and dear ones are doing well.

We are trying one POC in which we want to ensure zero rerouting of documents (PO and Requisition) from oracle fusion. I found one task in BPM for DocumentApproval and ReqApproval named " Allow all participants to route task to other participants".

I am attaching the BPM task screenshot for your reference as a sample. I tried two scenario with this flag being checked and unchecked. However i am unable to observe any difference in overall workflow.
 

Q1. At what point, will the effect of this " Allow all participants to route task to other participants" flag will be visible to us?