Is this compatible with multisite?
Yes. This plugin is multisite compatible.
How to use activity shortcode?
BuddyPress Activity Shortcode plugin allows you to embed BuddyPress activities in posts/pages using shortcodes. [activity-listing]
There are some more shortcodes with accepted parameters :
[activity-listing object=groups primary_id=2]
What does member shortcodes do?
When you will use member listing shortcode to any page or post then it will display A list of members.
Shortcode : [members-listing]
There are some more shortcode options available for use :
How to use group shortcodes?
If you will use groups shortcode to any page or post then it will Display a certain amount of groups.
Shortcode : [groups-listing]
Here are some more examples of how you can use groups shortcode