Thanks for writing in! It seems that you are trying to set up a one page navigation menu. I would recommend that you create two sets of menu. One menu will be used for the primary menu and the other one will be exclusively for the one page navigation menu. In the primary menu, the "Documents" menu item will have to use
https://movingmindfully.net/#documents as the href or url. For one page navigation menu, it will only use
#documents so that only the home is active and as soon as you click the Documents menu item, it will make it as the only active menu item.
To know more about one page navigation set up, please check this out: https://theme.co/apex/forum/t/features-how-to-setup-one-page-navigation/96/1
Hope this helps.