sskaje

Check all parent taxonomies on check, uncheck all sub-taxnomies on uncheck.
Compatible with WordPress Gutenberg.
Working with WordPress hierarchical category and customized hierarchical taxonomies created by Custom Post Type UI.

Taxonomy Tree Toggler

Check all parent taxonomies on check, uncheck all sub-taxnomies on uncheck. Compatible with WordPress Gutenberg. Working with WordPress hierarchical …

James Irving-Swift

Electric Studio

Adds a filter in your wp-admin that allows you to choose a parent page so that only the children of that page will be shown. Very useful if you have a lot of pages! 
Thank you to Brian Krogsgard for the changes in version 1.3 (Twitter: @Krogsgard)

Filter Pages by parent in admin

Filter pages in the wp-admin by their parent pages

Taxonomy Tree Toggler vs Filter Pages by parent in admin