How to configure Nebula AP as root and repeater via smart mesh?

Zyxel_JoyLee

To set up a smart mesh network with your Nebula access points, you'll need to use the Nebula cloud platform. You can enable smart mesh for all APs in your site or individually for each AP.

Here is the step-by-step article for your reference:

[Nebula] How to extend wireless coverage by configure smart mesh?

https://community.zyxel.com/en/discussion/10160