To run the "Bind Product Packages and Plans" Post-Install Task with a specific Plan Owner you have to update PLANOWN parameter in HLQ.CDBAPARM(SETUPxx) member and then generate again the JCL, Plans should be bound with this specific User-Id instead of the default User-Id that run the Post-Install Tasks.
You can update the parameter directly in HLQ.CDBAPARM(SETUPxx) member or thru Post-Install Tasks panels.
2 Global - Create/edit global PARMLIB members
Select SETUP Global and DB2 Subsystem Information
And select the member and DB2 SSID.
Bind Owner................> (Optional)
This is the help for this parameter.
Field: Bind Owner
Description: Enter the owner of the DB2 products' plan names.