Cpanel Module Customization

Hello,

I'm not exaclty sure if this is the right place to post this, but I'll try it anyway and hopefully a mod can move it if it's not right. Anyways I'll move on to my issue. I have a reseller who was wondering if it's possible to limit what his specific clients see when they login to Cpanel. For example:

My clients see: Mail, FTP Manager, File Manager, Parked Domains, etc basically the whole gammut.

What he wants is for all of his clients to only see: Mail, FTP Manager, and Account Info - like stats and bandwidth).

Is it possible to limit Cpanel to only those functions? If so how much work is involved? Can it be done on a restrictive level, where only his clients are affected. If anyone knows about this or has any ideas it would be great to hear from you.

Thanks in advance,
Chris