Fsl Mobile app - Create service document button visible under service report

Hi @* Salesforce Field Service *

, 

I enabled the create service document for FSL. So in the mobile app I can find this button under service report but this button added in work order pagelayout. I am pretty much sure this is FSL Standard behavior. even though I need some one help to confirm this one is standard and I need salesforce document as well. as of now I unable to figure it out this in salesforce document. 

Thanks In advance!