AdobeSign locks document after signing

Hello,

We are using Adobe Acrobat Sign (Enterprise) and I am an Account Admin.

However, under Admin → Account Settings, I cannot see Sending Settings at all, and therefore I also cannot find or control the option “Lock document after signing.” The entire Sending Settings section appears to be missing.

What we are trying to achieve is a workflow where:

• An internal signer signs first

• The document can then be forwarded to an external counterparty for signature

• Without the PDF being locked after the first signature

My questions:

1. Does the absence of Sending Settings mean that “Lock document after signing” is enforced at tenant level in our Enterprise account?

2. If yes, is this enforcement configurable by Adobe Support (globally or per group), or is it a hard, non-changeable policy?

3. Is there any way to allow forwarding a document for additional signatures after an initial internal signature, without breaking the audit trail?

We want to confirm whether this is a product limitation / enterprise policy, or if we are missing a configuration option.