This article explain how to pre-book a video conference in Microfot Teams. This can be an internal meeting however external participants can also be invited.
Step 1: Choose the channel you want to have the meeting in, in this example we've chosen the General channel. Click the camera icon as outlined below.
Step 2: Once the preview window opens, click the "Schedule a Meeting" option as shown below in green.
Step 3: Fill in the information like you would for a normal meeting. Make sure you add the required attendees as they will receive an invite and a link to the meeting. Once you have filled in the information click the "Send" button top right.
Below is an example of what the email invitation will look like. At the bottom of the email you will have an option to join the meeting.