Well aware several members have requested this feature and I have contacted ship station several times regarding adding this feature. I was advised the ONLY way to get it added is to submit as a new feature request. Maybe if all users submit the same request multiple times a day and overload them they will take action.
These are the responses I received back from support,
"I can submit a request to our management to arrange a meeting or call with you. However, I would like to clarify that the outcome is likely to remain the same."
"while we fully recognize the need for USMCA forms, they are not currently a supported feature in ShipStation. To be completely transparent, because this is a current feature limitation, the immediate technical resolution is to continue creating and printing the USMCA form outside of ShipStation."
The whole point to using ship station is to streamline the process. Being forced to go offline for 1 document, or worse, hand bombing it, is not a solution by any means.