multiple events on same day shows same date repeating multiple time

I can not figure it out that if we have multiple events on same day then how can we stop repeating date multiple time showing same day events

We have this website where dates are repeating itself for same day events
https://demo.risdubai.com/welcome/academic-calendar/

This is another website from reference only
https://www.diadubai.com/calendar

Where multiple evens for specific date are coming under one date that exactly I am looking for

Thanks