How can I see what has been updated on my site by the site members?

At the moment, we do not have a tool that would show exactly which changes were made to the tree by your family site members.
 
When someone makes changes to the tree, you can see it in the Newsfeed on your family site homepage showing you the person's name. 

If you would like to know what changes your family site members can make, please read the following FAQ: What privileges do my site members have?