2. Select "Signature and Abbreviation" from the drop-down menu, and then click "Manage" to open the window for managing signatures and abbreviations.
3. Click "Add", select "Export from File", and select the file to be signed in the pop-up dialog box; Select "Draw Signature", and the user can draw the signature he wants at will in the blank space of the window.
4. Next, preview the file to be signed, set the signature name, and click "Confirm".