There are plenty of low level quests around the server, you just have to go exploring and find them
if you ask nicely maybe they can swap at the time you ask or arrange something for another time. Hey they can only say no.
Needless to say, you will level 1/2 as fast compared to the people you travel with that has only one character; as the gap widens you feel "useless" because now they are higher level and traveling to more difficult areas.