To use this module, you need to:

1.  Go to *Settings \> Technical \> Sequences & Identifier \> Manage
    Sequence Options*.

2.  Based on extended module installed, different document types will be
    listed, i.e., Purchase Order.

3.  Activite "Use sequence options" to use, if not, fall back to normal
    sequence.

4.  For each option, provide,  
    - Name: i.e., Customer Invoice for Cust A., Customer Payment, etc.
    - Apply On: a filter domain to test whether a document match this
      option.
    - Sequence: select underlining sequence to perform

**Note:**

- If no options matches the document, fall back to normal sequence.
- If there are multiple sequence options that match same document, error
  will be raised.
