Hopefully you'll be able to get straight into your meetings.
When you click the link you will get sent to a page that looks like the image below. Please click the centre option "Continue on this browser". You will also have to allow the browser access to your microphone and video, make sure you say yes!
If you are accessing the meeting from an email that is not a KES email - for example an external student - you will go into a lobby. Please enter your whole name. You will then be admitted by the teacher!