It is possible to restrict the delegation of any outgoing envelope.

Such envelopes can be processed only by recipients specified in the envelope flow settings.

1. Envelope delegation can be restricted in the template editor. It will affect all envelopes created from this template and can not be overridden on the envelope level. This option is disabled by default
2. It is also possible to restrict delegation on the draft page for each envelope individually if it was not done on the template level