The NetBackup administrator configures policies that define the rules that NetBackup
follows when backing up clients. The policies include schedules for automatic,
unattended backups of the NetBackup clients (server-directed backups). Policies also define
when you can back up and restore files manually (user-directed operations). For example, if
the time range in which you can perform user-directed operations (your user window) is
from 8 am to 6 pm, you will not be able to back up or archive at other times (although you
can restore at any time).