Interface can't be assigned error:
https://www.sonicwall.com/support/knowledge-base/can-t-bridge-wlan-with-lan-error-index-of-the-interface-portshield-interfaces-can-t-be-assigned/170503521668929


Bridge Sonicpoint or internal Wireless to LAN:

https://www.youtube.com/watch?v=1v3oeEvIR-U&t=7s

https://community.spiceworks.com/topic/1042522-adding-sonicpoints-to-an-existing-sonicwall-with-internal-wireless


Other way to allow wireless to LAN with differing subnet but this info may be deprecated:

https://www.youtube.com/watch?v=-keeULW99EQ


Configuring Virtual Access Points with Granular access to LAN:

https://www.youtube.com/watch?v=TN1oHhjQz8U