Louisoix used all the power he had left within him to teleport us 5 years in the future after realizing that Bahamut was too powerful to be sealed by the Twelve again and consequently started casting Megaflare. I really don't think we, as simple adventurers, have it in us to sacrifice our lives for a simple teleport.

Anyway, if you want to move someone with you when you use the universal non-class specific teleport, they simply need to be in your party and in the same location. Unfortunately you can't teleport anyone directly to you, but if you tell them an Aetheryte near you they're likely to get to you in ~5 mins.