Office 365 (Outlook 2013 / 2016 / 2019 for Win) - Schedule a Meeting
You can send a meeting request to one or more people. Outlook tracks who accepts the request and reserves time on your calendar for the meeting. When you create a meeting request, you can add attachments, set a location, and use the Scheduling Assistant to choose the best time for your meeting.
For the most current information on scheduling a meeting with other people, please check out the following Microsoft help article: https://support.office.com/en-us/article/Schedule-a-meeting-with-other-people-5C9877BC-AB91-4A7C-99FB-B0B68D7EA94F.