Issue:
How can I change Polling interval for virus definitions updates in Policy Manager Server?
Resolution:
By default the clients checks for updates every 10 minutes
How often the client checks for updates can be changed: 
- Log in to the Policy Manager Console
 - Select a host or policy domain from the domain tree
 - Go to the Settings tab
 - Navigate to Windows > Centralized management.
 - Change the Interval for polling updates from WithSecure Policy Manager Server value
 
In Automatic updates settings you can edit the time for which it is suppose to get poll: https://www.withsecure.com/userguides/product.html#business/policy-manager/16.00/en/task_AD516BEDC4194E8F967E823074ECD143-16.00-en