Board Thread:Support Requests - Getting Technical/@comment-26545679-20150930231119/@comment-2170536-20151001035143

The most you can do this way is two tables, however. With three or more, you can start with one showing and the rest collapsed, but the toggle button will open the rest and close the first (the toggle button will always toggle every table...it doesn't understand that some are supposed to remain collapsed). You can do it with custom JavaScript, but as SethFu said, custom JavaScript is currently disabled on most wikis.

Edit: even this has looks like it has some irregular behavior.