Hello @a.dalcamo . by default MultiVendorX supports only the default status added by WooCommerce
Now if you want to add other order status (by adding your custom code), first of all you need to add them from WooCommerce end, as all vendor orders are also orders of WooCommerce.
Now you have to do further custom code to add these custom order status for the vendor too.
Do you have any developers so we can guide them on how to custom code this flow?