The PO signature workflow is probably what you are after, https://www.rklesolutions.com/blog/signature-workflow-x3/

GL accounts do not have an approval workflow however you could control the permissions on the Active flag, have them default to inactive and then only grant users who can approve the use set the flag to active.

Notifications are orders of magnitude easier to setup, heres an example from Setup / Workflows / Notifications

Hi,

Thank you for the respond. We currently do not have SMTP setup on the server so the email might now work. Let say a user created a PO in sage. Can this PO route to a user within sage as a notification or open item to approve before it goes into a creation status?

In my past experience in a IBM software. A PO was submitted, this PO would show up as a open item in the que for a user to approve before the PO is shown as completed. 

Please advise. 

Hi,

Thank you for the respond. We currently do not have SMTP setup on the server so the email might now work. Let say a user created a PO in sage. Can this PO route to a user within sage as a notification or open item to approve before it goes into a creation status?

In my past experience in a IBM software. A PO was submitted, this PO would show up as a open item in the que for a user to approve before the PO is shown as completed. 

Please advise. 

X3 has similar functionality, you can either add a gadget to your home screen called Orders to Sign