Add partition of activity diagram with drag&drop from defined block

when I drawing an Activity Diagram using Visual Pardigm, I can add a new partition with drag&drop form defined “Actor”, but I cannot do that with defined “block”.
Could anybody give me an advice?

Hi Bruce_Lee,
Your enhancement request is passed to our engineer team.
We will notify you once it is supported.
Thank you for using Visual Paradigm.

I would like to let you know Block is now able to drop as Partition of Activity Diagram

You can get the feature by updating Visual Paradigm to latest patch.
Details can be found at