Sales Invoice Item price is plus GST

How do you if you can make the sales invoice item include the GST? So, if my item is $75 instead of me working out the tax that makes up $75 how do I make it so I can just add the $75 in and on the invoice it shows the correct excluding GST amount? I’ve done this on another platform in Odoo just wondering if it can be done on Manager

See Manager Cloud

sorry mate, I finally a found reference to it.