I hope you are doing well.
The options that you are looking for are available only with business and enterprise-level service plans.
As you have a Creative Cloud All Apps subscription, it includes Adobe Sign individual plan.
To get those options available, you will need the business or enterprise-level service account.
For more information about the Adobe Sign plans, please refer to the following link: https://acrobat.adobe.com/us/en/sign/pricing/plans.html
To know more about the Two-step authentication feature, these help articles will help:
I hope this information helps.