SEP client update package criteria

Hi 

My problem abouth SEP manager update criteria ( if the client has been offline more than 15 days, it will download a full SEP 12 Virus definaiton file this file around 400 MB  we have many user like this. Same user can't download full package ang giving the eror for update status.

I want to learn Update criterrias SEPM 

When need user full package? How it is the change tis settings.

Thanks greatly!