Zoom is a video conferencing platform that can be used through a computer desktop or mobile app, and allows users to connect online for video conference meetings, webinars and live chat.
Zoom allows users to create and join virtual meeting rooms where they can communicate with each other using video, and audio. Additional features can give participants the ability to share their screen, share files, and use text chat within the meeting group or privately with others in the meeting.
In order to join a Zoom meeting, a participant needs to have the Zoom app, and either the meeting link, or a Meeting ID and a password.  While you do not need  Zoom account to access a meeting, users need to set up an account in order to host a meeting.

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Setting up a meeting – A host can choose to set up an instant meeting, or schedule one for a particular time.
This generates the Meeting ID and password, and a URL for the meeting which can be shared with people you want to participate in the meeting.

Zoom recently enabled passwords by default, meaning users will have to enter the password to join a meeting if they are entering the details manually. However, the participants do not need to enter this password if they click on the meeting url to join it.
Hosts can manage other settings within their account to allow permissions for features such as whether people will be allowed to share their screen, or have the ability to have a private chat with others in the meeting

Video and audio – When joining a Zoom meeting, users are given the option to turn their video on or off, and you will also be able to see other participants, if they have their camera enabled. The meeting host has additional controls to disable the video or mute the audio of individuals who are taking part in the meeting.

Share Screen – The Share Screen functions allow people to share what is on their screen with others in the meeting. Users can do this by clicking on the Share Screen icon on the control panel. The meeting host has the ability to control access to this function, and allow all users, specific users, or restrict it to ‘host only’.

Chat function – Group chat allows users to interact using text during the meeting, and participants may also use private chat with others in the group. Meeting hosts can adjust this setting to restrict who participants can chat to.