I have now called up the monitoring screen, how can I adjust the order of each head?

The method to monitor the sequence of changing screens is:

Method 1: Click and hold the corresponding monitoring point with the left mouse button on the main preview interface, and drag it to the screen position you want it to display. Just go up. However, this function is only supported by some video recorders. Currently, the K series and E series NVRs sold support this convenient operation. If your model does not support it, please refer to method 2 for a more general method to configure it.

Method 2: Click the main menu of the video recorder, system configuration, preview configuration, and view configuration. For example, to change the fifth screen to the first screen, click the mouse on the right screen to select the fifth screen, and double-click the first channel in the channel list on the left. After switching over, remember to change the first screen to the fifth screen. Click the mouse on the right screen to select the first screen, double-click the fifth channel in the channel list on the left and click Apply to complete.