How to change a spawnpoint for a single player? (reposted from Reddit.com)

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    Hello!

    I have posted this on Reddit but it got removed because a bot thought it was spam and I already asked mods to put it back.

    I am making a server and the server is made into 3 sections. First when the player joins they need to click a sign named rules and then they will be teleported to another section where they have the rules and they need to complete a test before they can go on the spawn. After they complete it, it will teleport them to spawn. This is where I have a problem since I need to change the player's spawnpoint when they get teleported to spawn. Are there any plugins/mods? The server is on version 1.16.5.

    Thank you!