Imagine you have a pencil box with lots of pencils of different colors in it. Now, you want to make sure that you take out the pencils one by one in the right order. This is similar to how a computer works when it is given many tasks to do by different people at the same time.
The blue (queue management) algorithm makes sure that the tasks are done in the right order. It assigns a priority to each task, just like you would prioritize which color of pencil you want to use first. This priority decides which task is more important and needs to be done before the others.
The algorithm also makes sure that no task is left behind or waiting forever, just like you would not want to leave out a particular color of pencil in the pencil box because it won't get used. It keeps track of which tasks have been completed and which ones are still left to do. Then it sends them to the computer's processing unit one by one in the order of their priority.
So, the blue (queue management) algorithm helps the computer manage all the tasks it needs to do smoothly and efficiently, just like you can manage your pencil box with all its different colors of pencils in an organized way.