Valuing CE for Additional Prelims

I have accepted a revised programme on NEC 4 Option A from a sub-contractor which shows a 5 week delay to completion which we have accepted as CE. When assessing the CE for the 5 weeks additional prelims CE should I use the peoples rates contained within the NEC? or the prelim rates contained within the Activity Schedule/Bill?

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You can use rates and prices for assessment but only by agreement with the Subcontractor. If they don’t agree to it you have to use Defined Cost plus Fee which would be in accordance with the Short Schedule of Cost Components with people being assessed using the people rates in Contract Data.


Would the same apply upstream using the peoples rates for prelim claims to the client for any client CEs?