After creating a PO from a Work Order, the user has to open the PO Module and the PO in order to edit it. Is there a way to automatically open the PO after creating it through the Document Entry?
Yes - there is a setting which can be turned on that opens the PO immediately after generating it through the Document Entry screen. Go to VM Purchasing / Requisition Manager, click on Requisitions / Options. Turn on the option to 'Open PO Document After Posting'.
This setting is user-specific and each user that wants this functionality will need to make this setting change.