The Widgets Control plugin is basically setup-free. It provides an option to have the cache cleared automatically when updates to the widget structure are detected. This option is disabled by default and caching systems get better at recognizing changes so you might not even need to use this option. Anyhow, if you desire to have the cache cleared automatically while you set up your widgets, you can enable this option.
Automatic Cache Clearing
It works with W3 Total Cache, WP Super Cache and WP Engine’s caching system.To enable automatic cache clearing, go to Plugins > Widgets Control Pro and enable the Automatic Cache Clearing option. Once you have set up your widgets, it is recommended to disable the option to avoid unnecessary cache clearing which can impact your site’s overall performance once it is production-ready.