Tech scout in practice
The director, the director of photography, the first assistant director, the gaffer, the key grip, the production designer and the location manager walk the place together. They decide where the camera goes, where trucks park, where power comes from, what must be dressed or hidden, and how long each setup will take. In the United Kingdom the same visit is called a recce.
Problems found on the tech scout cost an email. The same problems found on the shoot day cost hours.
Where it lives in CrewDesk
In CrewDesk a tech scout is a calendar event on the project, and what the departments ask for during the visit becomes tasks with an owner and a due date before the shoot.