Issue :
How to allot unlimited bandwidth to resellers? And how can they create packages with unlimited bandwidth for their clients?
Fix :
Enable ‘overselling’ for the particular reseller account from the Reseller Center. cPanel wouldn’t count the bandwidth for the reseller account if ‘overselling’ is enabled.
And if you check WHM >> Reseller Center >> Packages >> Allow Creation of Packages with Unlimited Bandwidth , then it will allow them to create packages (and accounts) with unlimited bandwidth.