Changes an existing group or privilege within a process. Optionally changes the attributes for that group as well. Change a group The new group attributes. If none specified, they are left unchanged. Change a privilege The new privilege attributes. If none specified, they are left unchanged. The id of the process to update. If none is specified, the current process is used. The original value to be changed The new value to take the place of the old value Add instead of modifying. Delete instead of modifying.