Online Documentation for SQL Backup for SQL Server
At this page you can edit general options for Shrink Database step.
Shrink database when it exceeds
Set database size limit. Database will be shrunk when its size goes over this limit.
Amount of free space to remain after shrink
Use this field to define percentage of free space that will be left in database file after it is shrunk.
You need to decide whether freed space should be retained in database files or returned to operating system.
Suppress informational messages
Enable the option to disable informational messages.