How can I display only future events on calendar?

at the moment you need to modify template file at events-manager/templates/templates/calendar-full.php

to use template: https://wp-events-plugin.com/documentation/using-template-files/

eg. wp-content/themes/Your Theme/plugins/events-manager/templates/calendar-full.php

Ok, but could you please tell me how to modify it?
What should I change there when I want to see only the future events?

Are you using the standard calendar that comes with Events Manager? Or are you using the additional WP FullCalendar plugin?

I installed the WP FullCalendar a few days ago. I like it, but the page loads very-very slowly. So I don’t know yet, which one I will keep.

Could you please give me the solution for both of them?

For the standard calendar you’d need to use a custom template like this:
https://pastebin.com/Djs9TH7h

Unfortunately, there isn’t a way to something similar with WP FullCalendar.

Ok, I will try it. Thanks a lot for your help!

No problem, glad to help ??