Hello @umer-aziz,

First of all thank you very much for using the pro version of the theme.

The section you have mentioned is set up using the widgets. Now in order to add the “Book An Appointment Form” go to Admin Panel > Appearance > Customize > Widget > Front Page Widget Area > Mediclean: Appointment.

For quick contact and opening, hour add Mediclean: Information widget and select the pages. As for hour and quick link, you have create the li list in the page content area

Screenshot:

https://prnt.sc/j9ca9i

http://prntscr.com/j9cb7h

If you have any confusion further then you can refer to themes official documentation given below:

http://themepalace.com/instructions/themes/mediclean-pro/

Hope this helps.

Best regards!!