NEC ECC : What can be included within quotation?

PMI has been issued by the Project Manager for works to be carried out by the Contractor. The new works were not known of at the start of the contract.
Within the quotation for the new items the QS has included for additional time for all management and the procurement of these works. Should these be included for even though these are the duties of the Contractor?

These have been let under an Option A contract.

Basically any extra cost that the Contractor will incur as a result of this event that they would not otherwise have incurred is what they can claim for.

If the existing management team who were going to be there anyway can also do this work then they can’t claim extra. If they have to bring in additional resources over and above what they originally priced for to manage the procurement and management of the additional works then yes they can.