1. Go to CamScanner app ->Me->More settings -> “Doc Export”->Upload Accounts -> sign into the upload account

2. Open the doc –> tap “more” icon (the three dot icon in lower-right) -> “Upload” -> choose the account which you want to upload to

For Premium account users, you can enable the auto upload feature. Go to "Doc export"-->“Upload Accounts” page, sign into the cloud service account and enable “Auto Upload”. Then all scanned docs will be auto uploaded to the cloud.