Hey @Poornima,
Thanks for reaching out.
To be clear, it sounds like you’re trying to have the Mini Calendar grid display, but regardless of how many events there are actually are, you only want it to show ONE event: the one immediately next-upcoming.
↑ Is this an accurate description of your goals? If not, let me know what you mean in more detail.
If that is an accurate description of your goals, then unfortunately this is not possible at this time. 🙁
The closest thing you could do would be to use the List Widget shortcode and set it to only show on event. You would do that like this:
[tribe_events_list limit="1"]
↑ This will list only one event: the next upcoming one, which sounds like what you’re trying to do here…
Cheers!
Geoerge