Programme management is like being the boss of a really big project that has lots of smaller projects inside of it. Imagine you are building a big, elaborate Lego castle. But instead of just building it all at once, you have to work on different parts of it at different times. You might have to build the walls first, then the towers, then the moat, and so on.
Now imagine you are the programme manager for this Lego castle. That means you are in charge of making sure all of the different parts get built on time and in the right order. You have to make sure that the people building each part (the wall builders, the tower builders, etc.) are all working together and don't accidentally mess up each other's work.
To do this, you'll need to make lots of plans and schedules. You might make a plan that says the wall builders need to be finished by the end of the week, and then the tower builders can start. You'll also need to talk to all of the different builders to make sure they know what they're supposed to be doing and when.
You'll also need to keep track of how everything is going. If the wall builders are falling behind schedule, you might need to figure out how to help them catch up. And if the tower builders finish early, you might need to find something else for them to work on.
Overall, being a programme manager means keeping track of lots of different people and projects and making sure everything is going smoothly. It can be a lot of work, but it's also really important to make sure big projects get finished on time and on budget.