I'm working on a project using PHP and MySQL. I want to know if I'm able to input multiple amounts of data into the same row and column.

For example:

```
id       leader_id      student_id
____________________________________
1     |       3      |  1, 2, 3
      |              |

```

So basically I want the user to input the team `leader_id`, and then the 3 other team member's ID. Also, I would like to know how I would be able to select each `student_id` individually.