1) What make and model camera ?
2) Is it wired or WIFI ?
3) record to what ?
4) what software are you using, what verson ?
5) what provides power to the camera.
Sounds like you're referring to Blue Iris.
If so and it's version 5, then please read the built-in "help" files in Blue Iris. I've attached below pages 92-97 that covers the Shield, Profiles and Schedules.