You will not be able to utilize a sender profile if all the steps are not completed. If the sender profile is not completed you will not see the from address available when creating your campaign. The sender profile needs to be complete for it to show up while creating your campaigns.
Each of the following steps need to be completed:
From address ownership verification
SPF Verification
DKIM Verification
Reply to ownership verification (if not the same as from address)
Footer Information
Postmaster Address verified through our Support Chat.
Here is a video walking through the Sender Profile setup