Step 1: Go to Appointment Booking Page

Step 2: Click on "Create New Booking Page" and create a booking page for your colleague.

Step 3: Click on "Add Appointment Types" to add the appointment types for your colleague.

Depending upon how you wish to set available times, choose your option. You can automatically determine your colleague's availability or  manually share few times to meet.

Step 4: Click on "Change host" for that Appointment Type

Step 5: Add your colleague as a host.

Step 6: Remove yourself as host or make yourself optional participant to receive notification when meeting gets scheduled with your collegue.

You can keep your self as organizer, if you wish to manage proposal for your colleague as well.

Step 7: Save and Go Back

Step 8: Change availabile times you wish to offer by clicking on "change hours"

Step 9: If you wish to make changes in other preferences such as duration, location, reminders and questions that are asked to your guest, you can do so by clicking on "Edit Appointment Type"

Make sure you click on "Save Appointment Type" after making changes.

Your colleague will start receiving the bookings.