Want to see all hook locations in the Astra theme? This plugin adds a handy link in the WordPress toolbar. Click to see or hide the hook locations. See screenshots below for more information.
Helpful links:
Astra Theme
https://wpastra.com
See all Hook Locations
http://developers.wpastra.com/theme-visual-hooks/
Add Content in Hook Location
https://wordpress.org/plugins/astra-hooks/