My pleasure and welcome to the course.
Regarding your question, usually for any EOT related to any scope addition such as; extra work that is not in contract”, QS will do his homework to prepare BOQ for the new scope and this new BOQ will be priced and agreed on by consultant and owner.
But for other EOT that is related to the delays occurred by consultant/owner, those delays are associated with Indirect Costs which include but not limited to; wadges, admin, support team, rentals, profits, waste…ets, should be decided by management and also should be reasonable to be approved.
Now some can argue that wadges and equipment rental are direct costs, but for some schools of thoughts it is not generated from execution of work which is result from a delay.
However, regardless of school of thoughts, as Haney said in his 1st presentation, it should be a collaborate work in which every one will be involved.
It is always to have workshops to align the work with all parties requirements to reduce the time of approvals.