I have responsibility for two or three projects at a time including design projects and construction projects. I frequently have to stop what I'm doing to answer phone calls or attend a variety of meetings related to other people's projects. For design projects, I work with other engineers, laboratory scientists, draftspeople who create drawings or images, equipment vendors, maintenance people, contract people and accountants. All these people do one or two specific tasks for the projects that I'm responsible for. My job is to make sure they know exactly what I want them to do, keep track of their progress, coordinate all the different people and activities, and report to managers about the progress of the project.
Construction projects involve even more coordination of people but less paperwork.
I do a lot of supervision of the construction. This involves checking in with people every day, asking how it's going, and getting them whatever they need anything to keep making progress. If there's a delay, I need to know about it, solve the problem and report the status to managers. It is always important to write down procedures and instructions AND to explain them face to face. These are aspects of good communication which is probably the most important skill you can have.