Approval of the designs at the earliest.
Selection of contractors & suppliers after the design phase itself if they are from your side.
Selection of the materials before the design phase & if required then should be in time at the time of the site execution.
Timely payment to the designer & to the on-site working contractors.
Timely Payment to the selected labours, contractors or vendors at the design stages if the client has any of them from his side.
Direct payment to the supplier/ vendors on time if there are.