#688
Bhuwan
Keymaster

First of all, thanks for using Bizlight theme.. Regarding the banner image changes, there is no option available in free version. Alternately,
Note: Child theme is recommended for banner customization.
https://codex.wordpress.org/Child_Themes#How_to_Create_a_Child_Theme
or purchase Pro version to get this features.

Hope this would help your queries.

Best Regards,