In ArcGIS Web App Builder under the "Map" feature, one could restrict the zoom levels by selecting Customize... under the section "Customize visible scales" and then remove unwanted scales:
![Steve_Weaver_1-1642812885023.png Steve_Weaver_1-1642812885023.png](https://community.esri.com/t5/image/serverpage/image-id/32037i8B6643B35BF72232/image-size/medium?v=v2&px=400)
I could not find that feature in Experience Builder. Does it exist? If not could you please add it to the Roadmap, please?