You're no doubt familiar with Self-Timer mode, which delays the shutter release for a few seconds after you press the shutter button, giving you time to dash into the picture. Here's how it works on the Nikon D7200: After you press the shutter button, the AF-assist illuminator on the front of the camera starts to blink.
If you enabled the camera's voice via the Beep option on the Custom Setting menu, you also hear a series of beeps. A few seconds later, the camera captures the image.
By default, the camera waits 10 seconds after you press the shutter button and then records a single image. But you can tweak the delay time, set the camera to capture as many as nine shots each time you press the shutter button, and specify how long you want the camera to wait between recording those successive shots. Set your preferences by choosing Custom Setting > Timers/AE Lock > Self-Timer, as shown.
Two more points to note about self-timer shooting:
Using flash disables the multiple frames recording option. The camera records just a single image, regardless of the Number of Shots setting.
Cover the viewfinder if possible. Otherwise, light may seep into the camera through the viewfinder and affect exposure. Your camera comes with a viewfinder cover made just for this purpose.