Zoom is a video-conferencing app which allows to hold video meetings with other people.
A zoom meeting can take anything between 2 and 100 participants.
NDSA mentoring meeting would involve 2 people, a mentee and a mentor.
An NDSA support group could usually include from 3 to 15 people. In a support group people usually talk about a particular topic relevant to the experience of being autistic. The discussion is facilitated by the hosts.
You don’t have to have your camera on during a meeting, although it is nicer for other participants if we could see each-other at least for a while.
You don’t have to speak during the meeting, although it could be beneficial for your confidence if you do. NDSA meetings are safe autistic-friendly environments where you can make small steps.
NDSA meeting will usually include one or all three of the hosts: Marie, Siobhan and Beth.

This is how the meeting will look with some participants. You can switch on or off your microphone and/or camera. You can participate in the chat.

NDSA Zoom meetings sometimes involve a guest speaker. You will be notified in advance about the speaker and the topic.
You can learn how to join a Zoom meeting in this video:
Here are some more tips on how to use Zoom. This video will also show how you would experience the meeting as a host as a mentor or mentee: