MultiMC

MultiMC, ie MMC, will import a twitch pack, you can get that directly from
the project page at
https://minecraft.curseforge.com/projects/world-of-dragons/files

Then open MMC and click on Add Instance.

On the next screen choose Import from zip and browse to the file you
downloaded and hit ok

This is part where you browse for the zipped file you downloaded, I've put
red text in the important parts.