Keeping previous versions of event description (like in posts)

sorry this is not possible at the moment but did you mean something like wp post revisions?

Yes, I mean something like this.

here’s another thread which may help you with this – https://www.ads-software.com/support/topic/are-you-able-to-access-revisions?replies=6

Thank you, but if I copy this

add_action('init', 'my_custom_init');
function my_custom_init() {
	add_post_type_support( 'event', 'revisions' );
}

into functions.php (at the end of file), the WP page is white (not loading). So what am I doing wrong? Or where is problem?

Thank you.

make sure that it’s within or inside php start and ending tags or try this snippet – https://pastebin.com/Th6GRpZk

As for where to paste this : https://wp-events-plugin.com/tutorials/how-to-safely-add-php-code-to-wordpress/

It works!!! Perfect!!! Thank you very much.