Bookings for Individual usage within our org?

Can someone point me to some good documentation on enabling Bookings for individual usage.  I would like our employees to be able to use Bookings to make a portion of their calendar available externally, without sharing what the rest of their calendar looks like.  Basically offering a Calendly like experience using Bookings.  I don't want to have our users publish their entire calendar out using O365 Outlook web publishing, but instead use bookings.  For instance, I would make 3 or 4 hours of my daily calendar available for external bookings, but would want to keep the rest of my day reserved for internal employees only to book my time using outlook.

All of the documentation I have seen to-date is geared for a completely different set of use cases aimed at a small business offering a service (like a salon) that allows someone to choose an available time and hair stylist.  My use case is I want to be able to send an external vendor that is soliciting me a link to a bookings calendar that shows 4 hours of my day (say morning) and lets them see the available 30 min slots (that is showing as filled slots when either an external user has already booked a slot, or if an internal user has already booked a time with me in O365 outlook).  Thank you.