Sider Bar Menu Trouble

I want a side bar menu that you can select a {drop down menu} product option > jump to the page. Having trouble finding a solution.
I was able to do a custom menu its not a good option. {too long}
Menu is on left side bar. I did a sample using the contact form the way to select options that I need.
Can you please help. Thanks.

• This topic was modified 9 years, 3 months ago by harris. Reason: {drop down menu}