From the list of databases, click on sqlerver-rdsssql
under DB Identifier.
Click on the Maintenance and backups tab and scroll down to the Backup and Snapshots sections.
In the Backup section, you will notice that Automated Backups are enabled for 7 days and see the Backup window.
Under Snapshots, you may see any snapshots that have been taken so far. If none have been taken, this section will be empty.
From the Snapshots section, click on Take snapshot.
In the Take DB Snapshot dialog, provide the Snapshot name: snapshot-sqlerver-rdsssql
and click on Take Snapshot.
Under Snapshots, click on the Manual tab and notice the snapshot you just took.
Optionally, you may view all snapshots by clicking on Snapshots section. To see automatic snapshots, click on System tab