Hello test_man,
There are two methods that I would suggest especially if you are fairly new to the Vision Builder AI software. If you can externally trigger your camera, you can set up a trigger signal to send every three minutes. Another option is to use software timed acquisition, by putting in a delay. The time delay function can be found in the "Use Additional Tools" tab. With software timed, it should be noted that you will be relying on the OS clock. I hope this helps get you started.
Vu