ZMODO ZP-IBH13-P 720P HD H.264 PoE IP Infrared Weatherproof Camera with QR Code Smartphone Setup - Zviewer Windows User Manual - Manual (Page 26)

System Information Setting
Date Time Settings：
Figure 220 System Sync Time
【 Time Synchronization】：Select to synchronize the local time.
【 Synchronization Method】：Select 【Use Local Time】and click
【 Sync Time】can realize the PC system time synchronization.
User Settings：
1. Each IPC can be set to be used by multiple users.