Auto number of grid blocks with chart and information


I would like to make an overview page like in the picture to have a list of employees.
The list is not the problem, it’s the two blocks down there.

The two blocks should contain a chart where I can see how the ratio of phone calls to items sold is.
In addition a few information about the employee.

My problem is how to list the blocks.
So the more employees, the more blocks.
Also that I can filter which blocks are displayed.

Does anyone have an idea for the implementation?