Team skill/responsibilities overview management tool

Hi

I'm looking for a tool (or another existing recommended solution) that lets me as a team leader assign and manage different team members to different skills and responsibility areas. The members need not be involved personally, it's just for my own sake. I need to make sure that all responsibilities/required skills of the software is covered by at least one person.

I would like to drag and drop members to these boxes/skills/responsibilities. If I click on a box I'd love to be able to see the sum of all members who are assigned. If I click on a member I'd love to be able to see the sum of all their skills. I have a sketch of this as a png but I guess I can't upload an image at the moment.

Does this exist, or is there another solution?