The Contractor hasn’t given a quotation
Client side: Quotations
Where the contract stands
Yes. If there is no quotation in the time allowed, 64.1 makes the assessment the Project Manager's job, and it does not need the Contractor's co-operation (the same in NEC3 and NEC4). First check quotations were properly instructed. The assessment is due in the same period as a quotation, counted from when the need became apparent (64.3).
Read the guide: Contractor gives no quotation
This is our plain-English summary, not legal advice. Your own contract, including any Z clauses, decides.
In Contract Status, step by step
See the passed date
The event shows the quotation due date and why that date applies, and the next step says you may proceed with a Project Manager Assessment.

CE-0007: 3 weeks from the notification, under 61.2.
Make the assessment
Enter the price and any movement in the Completion Date or Key Dates. It sits on the Quotations register against the event.

PMA-CE-0004, an assessment already issued.
See its effect
When it is notified, the event is implemented and the Completion Date timeline names the assessment as what set the date.

Each move in the Completion Date is tied to its event.
All screens are from the upgraded app, using a fictional water company, Kestrel Valley Water, and its made-up contractors.
What happens next on the other side
The Contractor sees the assessment on the event, with the price and any change in dates. If a Project Manager's assessment itself is late, the Contractor has the same notice route (64.4).
See it on a contract you can click through
The guided tour lets you walk the same fictional account yourself. Or book a demo, and bring the situation you are dealing with.