I. How to install and activate child theme?

You can find child theme install file in theme package download. Then you can install it same way to install new WordPress theme.

II. How to get settings from parent theme?

Some time, you current activate parent theme and completed settings theme for your website. For now, you want to install and activate child theme, in this case your site will get new settings from child theme instead your completed settings from parent theme.

Now you can follow steps bellow to copy parent theme settings to child theme.

1. Re-activate parent theme,
2. Backup theme options
   
3. Activate child theme again.
4. In theme option, you can restore Options