Show List Depending On Drop Down Selection

Im currently creating a spreadsheet for my work, with common problems and solutions to one of our websites.

When the spreadsheet is opened, the user will click a button depending on what sort of problem he/she is having. In the example attached, if the user clicks on "make payments" a form will appear. This will have a list of problems.

if the user choses problem 1 from the drop down list, then I would like the list of solutions to problem 1(from the MPData sheet) to show in the box below. The same goes for problem 2, problem 3 etc.