Find a meeting time
Slotted is a scheduling poll: you suggest time slots and the people you invite say which ones suit them.
Add time slots on a calendar, publish the poll and send its link to the people you invite. They answer in their browser, without an account.
From answers to a meeting
Each respondent marks every time slot Available, If necessary or Unavailable. Slotted counts the answers and marks the best time slot with a star; you decide, and the poll closes.
Add to calendar then downloads a calendar file, or opens Google Calendar or Outlook. Your file lists everyone who answered Available or If necessary as attendees, so your calendar can send the invitations.