Worker groups management UI
Workers are autonomous processes that run one script at a time using the full machines resources available to them. They are at the basis of Windmill's architecture.
Worker groups can be managed through the Windmill UI. In the Community Edition, you can create worker group configs and edit their tags. Advanced features like dedicated workers, custom environment variables, and init/periodic scripts require Cloud plans & Self-Hosted Enterprise license.
You can group the workers into worker groups, groups for which you can manage the tags they listen to, assignment to a single script, or the worker init scripts, from the UI.

More at:
Workers and worker groups
Worker Groups allow users to run scripts and flows on different machines with varying specifications.
Dedicated workers / High throughput
Dedicated Workers are workers that are dedicated to a particular script.
Init scripts
Init scripts are executed at the beginning when the worker starts.