How do I create a server that has at least 2 modpacks in one?

[ThePqtatoGalaxy]

I want to create a server that has at least 2 modpacks in one with a hub. So they would open a compass and there would be for example Crazy Craft 3 AND Skyfactory 3. I have been on servers that do that but I don't know how to do it.

 

[Kel_Co]

Based on my knowledge of modded servers, to achieve this you would need a total of 3 servers.
1 running Crazy Craft 3
1 running Skyfactory 3
1 running a vanilla server acting as the hub

The vanilla server would have some plugins to use a compass to redirect the player to the appropriate server. Having one server will not work for this case.

 

[LTHesh]

This isn't directly possible due to both modpacks having different mods. You cannot directly jump from one modpack to another, but rather you would have to log-out of said server and load into the new servers designated modpack.

Launcher > Server 1
Launcher > Server 2

You cannot jump from Server 1 to Server 2 directly.

 

[ThePqtatoGalaxy]

I found out recently that ToastyNetworks has a Server Redirect mod that they put in all the modpacks and servers