When William creates a policy, their settings are applied to sessions. By default, the policy is applied to all sessions, if no filter is added.
He can use filters to apply a policy to a target group (users, groups, or computers, for example).
When a user logs in to the farm, XenApp recognizes the policies that match the filters for the connection and applies them based on the priority ranking of the policy.
Some filters depend on whether we are applying a Computer or a User policy. The following list shows the available filters: