Alright I'm hosting a vanilla server and I want to have something in chat every time the command block is activated and when you press the words in chat, it'll teleport you to Spawn. Is there a way to do this without making everyone OP.
If you're asking what I think you are, you can use a tellraw command. It puts text directly into chat, which can also be bolded, colored, have a click event, and more. These are difficult commands to write or remember, but a website can generate them for you, like minecraftjson.com.