How can I attach a document with a task?

Process for attaching a document with a task on Iris is as under: Click on “Attachment” Tab. Click on “+” Icon. A Dialog will open. Click on Magnifying Glass Icon against “Document” Field. “Search” Dialog will open. Again, Click on Magnifying Glass Icon. A list of Documents will open. Find relevant Document from the list. Click on “Select” Hyperlink against the Document. Click on “Choose File”. Attach the file. Click “OK” Button.