Adding granular permission controls to Proton Docs that would allow document creators to mix locked (read-only) content with editable form fields within the same document.

Core functionality:

• Read-only sections: Parts of the document that cannot be altered by recipients (e.g., terms, conditions, legal text, contract clauses).
• Editable form fields: Designated areas where recipients can fill in their information (names, dates, IDs, checkboxes, etc.).
• Signature field: An electronic signature option—or even a simple "click to accept" checkbox—that automatically locks the entire document once signed.

Use cases:

• GDPR data collection and consent forms
• Informed consent documents in healthcare settings
• Budget approvals and client acceptances
• Terms of service acknowledgments
• Any situation requiring documented consent while preserving the integrity of the original text

Security benefit: This would ensure the informational/legal portion of a document remains tamper-proof while enabling a streamlined signing workflow—all within Proton's end-to-end encrypted environment.

Currently, users must resort to external tools or manual workarounds to achieve this level of control over document structure and permissions. Native support in Proton Docs would make secure, legally-binding document creation accessible to all users without leaving the Proton ecosystem.