KPMG are one of the largest accountancy practices in the world and are insolvency experts. They represent a lot of the banks and credit houses, and consequently do a lot of voting on individual voluntary arrangement proposals.
The clause to which you are referring gives the Chairman of the meeting the right, with your prior approval, to use votes cast by KPMG to support any other creditor modifications which do not create a detrimental effect to the rest of the proposal. No party can accept modifications on your behalf without your prior agreement, so do not worry about this clause.
I think Ivor's explanation is very well put!
Regards, Melanie Giles, Insolvency Practitioner for over 20 years.
For further details contact me at
http://www.melaniegiles.com and view my IVA blog at:
http://melaniegiles.blogs.iva.co.uk