How to create a train with carriages?

You can make it either manually or automatically using this userscript.

Mmm... How can you create a train without carriages, I wonder

Jokes aside, to do it manually refer to this page https://www.steamgifts.com/about/comment-formatting, you simply write something like [NEXT](giveaway url)

Just.. don't. Please. Ugh. No more trains.

I make a bunch of private giveaways and then edit the descriptions to include the links. Some people use scripts and stuff but I am old and don't understand modern technology.

Pilda mention a easy and fast way.
The old fashion way is you create one invite only gib then you create another invite only gib and put the second gib's link in the first gib's description and so on