Disable Share It for selected spaces
In the Comala Share It global configuration menu, you can specify the spaces where content can have Comala Share It links created.
In Permissions>Restrict by space
select a displayed space name
use
>arrows to move spaces between Allowed Spaces and Restricted Spaces listsdouble-headed arrows
>>will move all displayed spaces between the lists
Scroll down to Save the configuration settings once you have finished.
All new user groups are, by default Allowed Groups. All users who are members of a new group will be allowed to create links to the allowed spaces.