Appointments revert after an edit

If the the appointment calendar isn't keeping changes or appointments revert, the most likely reason is that someone has checked the box to "Prevent this page from creating additional dialogs".

Steps to Allow Additional Dialogs

1. In the upper right of Chrome, click the three dots to open the menu.
2. Select settings- a google page for chrome will open with all your settings for chrome.
3. At the very bottom, go to advanced settings.
4. At the bottom of the advanced settings, click on Reset Browser Settings- this will make dialog box appear as they should.