Acrobat Pro DC Vs. Acrobat Standard DC

Hello,

We purchased Acrobat PRO DC 2017 last year as "Add-on" additional licenses in the organization.

However,

several colleagues still want to use Acrobat Standard DC or Standard XI.

Can we utilize Acrobat PRO DC licenses for Acrobat Standard XI?

I checked....Adobe allows backward licensing.

However, I could not find any information regarding downgrade editions or substitute.

Regards,

Gaurav Maheshwari