Board Thread:Questions and Answers/@comment-89.160.79.11-20130206124147/@comment-6342844-20130206164357

at the keybind options you got "open Muse keybind GUI" (i dont know the default key anymore). if you open this menu, you can bind an on/off key to the jetpack.

also you have to set the thrust: go to you Power Armor Tinker Table, click on you chestplate, click on the jetpack addon. at the bottom right corner you see the "Thrust Bar", simply drag it to the right.

you can do the same with the rocketboots or the batteries.

oh, and can someone tell me if there is a way to charge the batteries? would be pretty bad if i always have to craft a new energy source :(

EDIT: sorry, just found out you can load it with EU (e.g. at a MFSU)