PO Header attachments at approval notification: New doc category

Hello,

As of today, is we add an attachment into the PO header and choose the 'To Approver' category, it will be included in the notification that is sent to the approver.

We would like to segregate such attachments, hence we would like to:

1- Have the 'To supplier' attachment category also included in the approval notification, or

2- Create a new attachment category that would also be picked by system and include the attachments from this category into the approval notification.

Would any of the above cases be possible to setup?

Thank you.