Answer:
Tell each member to begin training in the roles they play better to gain from expertise benefits.
Explanation:
It's very clear that they are awful in the other parts. Colin should take the bass and jewel should take the guitar. Britney should sing and Sheila should play the drums. In this way they will all be focused on what they succeed at and practice till it makes perfect to save time before their cash runs out. Perhaps during the free time they might try their hands on other instruments they fancy.