You can configure the time period for the Service Level Agreement (SLA) at the plan level. When you configure SLA at the plan level, the settings apply to all entities that use the plan for backup.
From the navigation pane, go to Manage > Plans.
The Plans page appears.
Click the plan that you want to configure SLA for.
In the RPO area, beside SLA click Edit.
The Edit SLA dialog box appears.
Configure the SLA settings:
To use the default SLA time period, select Use system default SLA.
To define the SLA time period, select the number of days, weeks, or months that you want to calculate the SLA percentage for.
In this option, a week is 7 days and a month is 30 days.
To exclude entities associated with this plan from the SLA calculation, select Exclude from SLA, and then beside Reason for exclusion, enter the reason why you excluded the entities associated with this plan from the SLA calculation.