Hi, 

You can have a voucher type that requires separate user to approve.  In doing this you may wish to create a new voucher type so that only the external voucher would be different.   See the voucher type - check box for separate user to approve.  This is common if we need SOD. It’s quick and easy. 

Best regards, 

Thomas

Example ---  Then you could use this in the external voucher process (see external voucher parameters (sometimes called basic data) with the load type, so this is defaulted.