GJ Events - Can a List be generated?

I have 48 categories - each having 6 groups.

Is it possible to view a list of ALL the 6 group's events within a category?
And if so, is it possible to view a list of ALL events grouped by different variables such as date or category?

No, there is no GJ Events menu endpoint yet. Eventually there will be and it'll display all the events that the viewing user is able to access.

In GJ, can you tell me what file(s) need to be modified in order to NOT get system messages like this:

New group video awaiting approval

[topurl=http://wildhorseandburro.org/index.php/cb-profile/userprofile/ExampleOne]Example User-1[/topurl] has published the video [topurl=http://wildhorseandburro.org/index.php/group-approval/pluginclass?plugin=cbgroupjive&action=groups&func=show&id=490&tab=grouptabvideo]AZ Corrections - ACI Wild Horse and Burro Program[/topurl] in the group [topurl=http://wildhorseandburro.org/index.php/group-approval/pluginclass?plugin=cbgroupjive&action=groups&func=show&id=490]MO - Burro Owners[/topurl] and is awaiting approval!

New group approval notifications can be turned off within GJ > Configuration > General by either turning off Approval or turning off Notify if Approval is enabled. All other notifications are controlled by visiting the group and clicking Notifications on that groups menu then disabling the various notifications.