Yes. In the grid synchronizations window there is an option in the lower-right corner to ‘Exclude hosts from synchronizations’
Host names included in the exclusions list will be excluded from synchronizations executed for the current BatchPatch grid.
This means that if a host name exists in an OU or group that is linked to the current BatchPatch grid, and if the host name is also included in the exclusions list, then that host name will be ignored during synchronizations. It will not be added to the BatchPatch grid.
Similarly, if the host name exists in the current BatchPatch grid, and if the host name is included in the exclusions list, then that host name will be ignored during synchronizations. It will not be removed from the BatchPatch grid.