What I have done is use Stringify to create flows.
The Arlo cameras stays in disarm mode.
One flow I created is to activate from 12-6am. If there is motion it records a 20s video and not notify me.
I did one also for my outdoor cameras that On motion it records a video also. Works great. I have attached my nighttime flow for you to get an idea
The same 2 Arlos are used as motion sensors and then used to record