Where is the desktop setting of oppor9plus?

To set the phone's main interface, please slide your hands inward on the phone's desktop-a nine-grid interface will appear. Click the small house button in the upper right corner of the page that needs to be set as the main interface to turn light green, and then the setting can be completed.

Note: ColorOS3.0 version 3.0 system does not support the main interface setting.