Use the special FootPrints form to request creation of things like file shares, databases, websites, etc. You can also request a person be added to such a resource that you have controlling permission on. Go to the link. Click "Respond to this Survey" in the upper left to get started.
If you want to view or modify a previous form you submitted, click the View menu to the right and choose "All Responses".
Note if you "save and close" in the middle of the form rather than "finish", you can come back later but it's not actually submitted until finished.