Child theme enables you to customize the theme as you want and update the theme without losing the changes. A child theme ensures that your customizations will not be overwritten even when you update the parent theme. Without a child theme, you need to get a backup from the theme and its files, then replace them in each update. But if you put these codes in the child theme, there is no need to replace the changed files. You can put them in the child theme and update the theme easily. (We always recommend you get a backup).Read More about child theme
To activate the child theme, follow the instructions for activating the theme: https://webnus.net/deep-premium-wordpress-theme-documentation/install-deep-theme/
Please note: You need to have the main theme installed, and then activate and install the child theme.
While child theme is a great way to add customization codes to Deep, you need to consider that if the customization codes impact and cause difficulties and issues in your CMS System performance, this will be out of Webnus support. You can check Envato support rules here: This Link
How To Download Child Theme
First: Go to download panel and download Deep Theme package completely. (This zip file contains child theme documentation);
No2: Install deep_child_theme.zip from WordPress Admin > Appearance > Themes > Add New and activate it. Or, install it via FTP or cPanel. To do this, go to the directory Public_html / wp-content / themes and upload and extract the zip file there, then go to WordPress Admin > Appearance > Themes and activate child theme.
It should be noted that child theme activates when the parent theme is installed, if you don’t have it, you can get it from here: https://webnus.net/deep-premium-wordpress-theme-documentation/install-deep-theme/
Related Link For Child theme: