A Bing service that gives you enhanced search details from billions of web documents.
Daniel answer with 2 changes worked for me with child account.
Add --disable-features=msUndersideButton as an additional argument in shortcut target field. Note --dis instead of -dis....
AND
Disable "Startup boost" in Edge's "System and performance" setting.
From https://www.reddit.com/r/MicrosoftEdge/comments/10jccjy/remove_the_discover_purple_star_button/