It’s not possible to continuously stream video forever on the IQ Panel. That’s a feature I’ve requested from Qolsys but thus far they’ve said no because they’re concerned about screen burn-in. I think there are ways around it like cycling through different cameras. I’ll let them know you’re asking for it.
Currently, if you want to stream video continuously, you need either an SVR or a tablet with one of the Alarm.com TV apps. See this guide for more info.