How to show both Project Explorer and Code window in the VB window?

I might have clicked a wrong button but now I cannot get my VB window to show up correctly. By default, previously, if you hit "View Code" on the Developer Ribbon in Excel, you will be brought to the VB window with the Project Explorer on the left and 80% of the screen on the right showing the Code window.

Right now, whenever I click "View Code", the code window will take up the entire screen. If I click to show Project Explorer, the Project Explore will take up the whole screen. The View menu will not give me an option to show Project Explorer to the left of the code window.

Does anybody know how to do it? It's not something that I cannot live with, but it is EXTREMELY ANNOYING.

Thanks for your help in advance!

maybe tools-options-docking tab and check the option to dock the project explorer