In MScan and MView, each user (chosen or created from the User window shown when the programs start) has his or her own cloud settings.
Click on the Settings/Cloud Storage Settings menu item on uppermost window of MScan or MView.
For Amazon S3:
Choose Amazon S3 for the service and enter the Access key ID and the Secret key ID.
For Microsoft Azure
Choose Microsoft Azure for the service and enter the Storage Account Name and the Primary Access Key.