Change multiple cells based on dropdown list value.

Hello,

I'm having an Excel workbook with two sheets, one base sheet and one 'database' sheet. The database sheet consists of main-processes with several sub-processes, it looks something like this:
Capture.PNG
Now, in the main sheet, there are dropdown lists of the main-processes. I want the user to select some main-process, and all the sub-processes to appear automatically per main-process.
I also want a template version of the sheet, where other main-processes, with various amounts of sub-processes, can be added in the database. The selecting from the menu should then still work without changing the formula or VBA code.

I'm looking forward to your answers!

Edit: I've added an example file with more explanation.

I get your principle, with the second list. But all sub-processes have to be displayed anyway.

edit: Sorry for the double post, I want to delete this, but I don't know how