THANK YOU. omg, yeah that was difficult to figure out because it wasnt in one of the quest. maybe like include lvl 1 repair in one of esther's quest, then the rest of the levels would be up to the player.
Look at hints at the top right heart, it gives a brief description on what you should do if you want to advance levels on certain characters.
I did man. it just says increase repair skill level. i didnt know you had to look at the hallway board thingy