Roblox prompt features for joining game related events

I played a few games in the past like 2-3 years ago that used some sort of roblox service that made a gui pop up in the bottom right corner with 2 buttons allowing the player to click the 2 options.

I want to use this service to make an event system for my game. But I don’t remember what the service was. I could just make a custom one using gui scripts but I feel it be easier to use the provided roblox resource to do so.

So I was wondering if anyone knows what it was called. Basically the way it will work is it prompts everyone in all servers with a question like ‘do you want to join the event reward blabla’, and they click yes it tps them to the event basically.

I don’t think it’s a service. The devs probably simply fired a remote event to all clients from the server and made the gui pop up

If you mean on the website then that’s the experience notifications system.

Here’s the docs on it
https://create.roblox.com/docs/production/promotion/experience-events