The Manage tasks button to the right of each connection links to a list of all the tasks for that connection. Tasks will eventually expand to include many more options, but for now only a metadata task is able to be created. A Metadata task catalogs the metadata for a data source and places the extracted information into a specified Collection.
Before creating a task you need to have a collection in which to put your task output. The collection must be created before the task.
Tasks work with version 2.x of DWCC. If you are still using DWCC v1.x. See the article on DWCC v2.0 for more information.
The Create a task button opens a dialog where you can configure your new task. To create a task you will be prompted to choose a database and schema as appropriate. You also need to add it to a collection:
In addition to creating tasks, you can also sync, edit, or delete them from the three dot menu to the right of the task. Sync runs the task again, pulling in any new metadata. With Edit task details, you can change any of the original configuration (database, schemas, or collection), or you can select Delete task.