In construction, fields like architectural, structural, sanitary, electrical, mechanical etc exist. Which field guides the milestone for the project?

It documents a significant decision point in the project development process, such as a team meeting, beginning or completion of a phase, or funding approvals. The key tasks that function as the six major milestones under the Project Development Process are:1) TaskX – Scoping Team Meeting2) TaskX – Preliminary Field Inspection Team Meeting Date3) TaskX – Location and Design Approval Date4) TaskX – Field Inspection/Constructability Team Meeting Date5) TaskX – Pre-Advertisement Conference Date6) Task – Advertisement