Removing pages using process template button URL
To request that pages be removed from a document, add the “removePages” parameter to the URL of the Scrive Process Template button. Note that this parameter will be ignored unless the document is created from the Scrive Template.
Example
Custom Button URL:
/apex/scrive__scrivedocumentfromtemplate?Id=a08E000001BT3bSIAT&sourceRecordId={!Opportunity.Id}
becomes:
/apex/scrive__scrivedocumentfromtemplate?Id=a08E000001BT3bSIAT&sourceRecordId={!Opportunity.Id}&removePages=1,2,3