Assuming you have the usual Zamp 3-port connector on your roof you can add up to two more panels. Zamp panels come with SAE connectors that plug right in. Other brand panels come with a more standard Mc4 connector. If you buy another cheaper brand panel you would need to change the connector or buy an adapter.
Zamp are great panels but cost 3 to 4 times as much as other brands.
I did this on my 2017 Adventurer and it works great.
You probably have another SAE connector on the outside of your View somewhere to connect a portable solar panel as well.
2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad