You can set start-stop times in the camera menu if you are using Auto (GoCam and Ghost only). However, if you are using Premium Service, it's easier to set them in the app, which is shown here. However, the explanation is the same if you set the start-stop times in the camera menu.
The GoCam and Ghost have two Start-Stop times while the GoLive has four.
When you use Start-Stop times, the camera only works during the times included in the Start-Stop settings for time lapse and motion-triggered photos. It will take scheduled event photos even during times outside the Start-Stop times.
Take photos only during on part of the day
This example shows a camera that is set to take pictures only between 9 PM and 6 AM. This camera is watching a camper at a camp. The owners don't want to get a bunch of pictures of them working around the camper while they are there, so they use this setting while they are at the camp, then turn start-stop times off when they leave so that the camera takes pictures 24 hours a day.
Take photos all 24 hours but use two different settings
This camera is set to take regular motion-triggered photos between 9 AM and 6 AM, then take time-lapse photos every 10 minutes between 6 AM and 9 AM. It will also take motion-triggered photos between 6 AM and 9 AM. You might use this to monitor a large food plot during early morning when deer may be moving in the food plot but far enough away that they don't trigger the camera.
Take photos during two different parts of the day but not during the rest of the 24 hours
This camera is set to take time lapse photos every 10 minutes between 5 AM and 9 AM and time lapse photos every 5 minutes between 4 PM and 6 PM. It will not take photos from 9 AM to 4 PM or from 6 PM until 5 AM. This example shows two different time lapse settings but you don't have to use time lapse. You may leave time lapse off, but have different trigger intervals or even use the same trigger intervals. You're just running the camera during two different parts of the 24 hours, regardless of the trigger and time lapse intervals.
Use four start-stop times to take time lapse photos morning and evening and regular motion-triggered photos during the rest of the 24 hours
This GoLive is set to take motion-triggered photos 8 AM-4 PM and 6 PM-5:30 AM, time lapse photos every 10 minutes from 5:30-8 AM, and time lapse photos every 5 minutes from 4-6 PM. During the time lapse periods, it will also take motion-triggered photos if something is close enough to the camera to trigger it. If you don't want motion-triggered photos, set the trigger interval for an hour and you will get no more than one motion-triggered photo every hour. There is no way to turn motion sensing off during only parts of the day.