Start time & end time

Hi!
First of all, congrats for the plugin. It’s exactly what I looked for.
One quick question:
I would like to implement this plugin for reharsal space service, for this I need to put two field: Start time & End Time. How is it be possible?

Thank you in advance.

http://www.cultureconnect.co.ke

https://wordpress.org/plugins/fastbook-responsive-appointment-booking-and-scheduling-system/