WITH TWO UNITS SHOOTING this week, it’s less that Liam has more free time, and more that the Fourth schedule has been a little bit more flexible to accommodate everyone else’s other interests. While most of the cast is either sleeping in or whining at their agents about wanting more, more, more — as if they have the time or stamina for it — Liam’s doing a brunch for an arts education charity. There are fans outside, but then there always are, especially at stuff like this that easily features half a dozen people someone cares about. Carly has begged off. Doing sound editing on commercials is generally way more nine-to-five than his job, and she’s always been insistent about keeping it that way. Another random charity lunch decorating his arm isn’t worth the later hours to her. Liam can un

