The Migrate Real-Time screen will only be active if the subscriber has purchased the Real-Time migration feature.
If you haven’t purchased it, the option will remain disabled.
To purchase the additional feature, please contact Satrang Support. You can raise a ticket using the following link:https://satrangtech.freshdesk.com/support/solutions/17000019619 or email directly.
PS: View Drag, Drop & Upload Files to Amazon S3, a Salesforce AppExchange app for moving files from Salesforce to Amazon S3: https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3000000B5ZPqEAN