User configurable device-specific Connect Via link

Am an MSP / MSSP that's new to Observium...

See from the Device drop down the ability to Connect Via Telnet / SSH / etc to some of my devices (eg Vmware) but don't see this option for my (SonicWALL) firewalls. Would very much like to have the ability to manually configure a device-specific Connect Via link. For example...

https://1.2.3.4

https://1.2.3.4:4443

I've looked through several of the MySQL tables where I thought I might find this info but couldn't find anything. Am I just missing it or is this not an option today?