Prevent CREATEPO from autocreating PO's from approved Requisitions (based on catalog type)

Hi

Our system is already setup to create non-catalog requisitions and to prevent them from automatically creating PO's.

Now, we are trying to setup icatalog module to create catalog requisitions. All the required has been done and everything looks to be working fine except that PO's are automatically getting created as soon as a PR is approved.

Non-catalog setup was done long time back so not sure how to mimic similar functionality for catalog requests and prevent it from automatically creating  PO's.

Any help would be greatly appreciated in fixing this.

Thanks

Kiran