Clear everyone's sidebar
Take the own sidebar off every player's screen at once.
A Minecraft element (a step) in Scoreboards & teams. Needs the Basic plan or higher to go live; building and testing are free.
Example
When a round ends → Clear everyone's sidebar.
Also called
clear all sidebars, hide all scoreboards
Works as a data pack?
No. This one needs the Elementium plugin on a Paper server.