how can user edit his calendar?

With the Free version you can create a calendar that can be edited from the WordPress admin panel.

So, with the paid version is that possible that user can edit the calender?

I want my site users to maintain their own calender. So, they need to edit and maintain different calender for each of their isting. is that possible?

@rajesh10071986

Yes, this is possible with the Premium version which you can download at https://www.wpsimplebookingcalendar.com