Add collection
This functionality offers the ability to create a new collection within the selected database. Specify additional advanced settings next to the name. If the GridsFS collection option is enabled, the name of the collection is extended with ".files" and an associated chunks collection is created  when saving.
The remaining options are explained here:Â http://docs.mongodb.org/manual/reference/method/db.createCollection/
When using this functionality you need to take care of MongoDB's naming conventions and make sure a database with the same name does not already exist on the server.