[Theme:Accesspress Mag] How to make child theme for accesspress mag ?

Hey,
How to make child theme ?
I’ve created style.css for child theme but i am stucked in creating functions.php. So, please help me to create child theme for accesspress mag.
style.css :

/*
Theme Name: accesspress-mag child theme
Theme URI: https://accesspressthemes.com/wordpress-themes/accesspress-mag/
Description: This is a custom child theme I have created.
Author: AccessPress Theme
Author URI: https://accesspressthemes.com
Template: accesspress-mag
Version: 2.1.9
*/
@import url("../accesspress-mag/style.css");