Using signup sheet, you can block few timeslots for the meeting and share with people.

Step 1: Go to "Appointment Booking"

Step 2: Click on "Manage Appointment Types" on Booking Page where you wish to offer this type of appointment.

Step 3: Click on "Add Appointment Type" and select "Manual" in how to set available times

Step 4: Click on "Change Hours" on newly created signup sheet and click on "Change times"

Inside the page click on "Change Times" to add available times for meeting.

Remember signup sheet does not take in consideration your calendar availability for these timeslots hence, a timeslot will only disappear if someone schedules meeting using signup sheet with you.

Allowing only one person per appointment:

If you want to book meeting with single party, make sure you keep maximum guest capacity for each time as "1".

Hosting Group session:

If you are hosting a session where multiple parties can sign up and reserve a spot you can keep maximum guest capacity as per your own guest limit.