Job Request linked to a ChaRMs & ITSM : tab disabled

Hi Experts,

We have created a job request which is linked to ChaRMs & ITSM or CRM Order, but we cannot find the create button tab on assignment block within Job Scheduling Management.

we have copied Transaction type SMAD to ZMAD for change document (Admin Change).

Initially status is "New" of change document while status change to "In Process" the create document tab should be visible at assignment block..

we have done all configuration as per the standard guide..

waiting for the reply..