Please tell us some basic information before asking for help:
Model Name: ROG Phone 3 (ASUS_I003D)
Firmware Version: 17.0823.2009.99
Rooted or not: Nope
Frequency of Occurrence: Persistent
APP Name & APP Version (If your issue relates to the app): ASUS Launcher 7.0.1.66_200910
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
========================================
When press & holding or pinching home screen to change home screen preferences/settings there is no option to to select which screen is home screen or add remove extra screens (settings imported from ROG Phone 1).