Took me 30 minutes to figure out where the hell my shelf has been placed 😅
If you ever end up reading this post, please note that the Pycharm documentation is outdated (as of 2025) and there is neither a VCS Menu nor Version Control Window
But, Shelves are in a Tab of the Commit Window.
I am running PyCharm 2025.1.2, Build #PY-251.26094.141, built on June 10, 2025