Usually a project manager works with a team of people to get the work done. And PMs don’t usually know a lot about the project when they start. When you think about it, you can categorize pretty much everything a project manager does every day into three categories.
Gather product requirements
Being a project manager almost always means figuring out what you’re going to build. It’s one of the first things you do when you start to plan the project! But as you go, you are always learning more and more.
Manage stakeholder expectations
There are a lot of people involved in making most projects happen: the team that actually does the work, the people who pay for it, everybody who will use the product when you’re done, and everybody who might be impacted by the project along the way. Those people are called your stakeholders. And a big part of the PM’s job is communicating with everybody and making sure their needs are met.
One of the most important stakeholders is the sponsor. That’s the person who provides financial and political support for the project.
Deal with project constraints
Sometimes there will be constraints on the project that you’ll need to deal with. You might start a project and be told that it can’t cost more than $200,000. Or it absolutely MUST be done by May. Or you can do it only if you can get one specific sources to do the work.. It’s constraints like these that make the job more challenging, but it’s all in a day’s work for a project manager.