Create UI - BCROS Staff vs SBC Staff functionality

There are slight variances between what functionality BCROS & SBC staff should see

**Completing Party:**
- Editable for BCROS & SBC staff

**Document Delivery:**
-Editable for BCROS & SBC staff

**Certify component**
- Editable for BCROS & SBC staff

**Staff payment component**
- Display only for BCROS staff

What displays in the Filed by section in the filing history will be covered in a separate ticket.

Start at the Create UI entry point and trace how BCROS and SBC staff roles are identified. Verify the Completing Party, Document Delivery, and Certify areas are editable for both roles, while Staff payment is display-only for BCROS staff. The Filed by section is out of scope; done means these role-specific behaviors match the listed requirements.

Written by the indexing model from the issue text.