A file uploaded to the Documents tab of a case can be linked to a task. 

This option is used if a document is relevant to a task or would be useful for reference

E.g. A task relating to an Office Action may be linked to the Office Action document for reference. 

To link a document to a task:

1. Click on a task name
2. Click ‘Add’ to select an individual document

        OR

1. Click ‘Add Multiple’ to select more than one document
2. Click ‘Add’/’Add to Task’ 

The linked documents will be displayed on the right of the task Details.