# 7. Group Control
## 7.1 Project Introduction
This section demonstrates controlling multiple robots via a mobile device.
## 7.2 Program Download
1) Open the **[Hiwonder Python editor]()** and load the **[main.py]()** file for group control.
2) Modify the Wi-Fi name and password to match those of the local network.
3) Connect the robot and download the **main.py** file onto the robot. Please note that each robot to be controlled requires this download. Once the download is complete, disconnect the data cable, power off the device, and reboot.
## 7.3 Operation Steps
1) Connect both the mobile device and robots to the same Wi-Fi network. Open the group control app and select the corresponding robot.
2) Tap the refresh button to see the robots connected to the same Wi-Fi network.
3) Next, tap the **Action group control** button to choose a default action group. All robots will execute the selected action simultaneously.
4) Tap the **Add** button to create a custom action group. For custom action groups, they must first be imported into each robot via the PC software. Once imported, all robots will execute the custom action group.
