For zoom, go to zoom.us in your web browser and then click on the sign in option up in the top right.
When you get to the sign in screen it should have a couple fields for input and then below that should be some images, click on the little key image that says SSO.
Once it changes Pages it will probably ask for a domain name. It will have a blank field where you will put the word "park" which will fill in the field next to where it says .zoom.us
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Once you put the word Park in and continue on it will ask you for your Park credentials. Sign in using your SSO and you should be back into Zoom.
Thanks!