Seton Hall University issued Lenovo laptops contain a physical shutter/cover that can be utilized to either open or close (block) the integrated web camera that is located on the top of the laptop's screen.
The following models of device offer the camera shutter:
Lenovo X390 Yoga
Lenovo Thinkpad T490s
Lenovo ThinkPad X13 Yoga (all models)
Lenovo ThinkPad T14s (all models)
When the camera shutter is closed there should be a red/black colored dot within the camera physically.
To operate the shutter (i.e. move from open to closed and vice versa), above the camera will be a small sliding switch.
Sliding the switch will open or close the camera depending on which way the switch is slid.