62MZ calc for critical zones

Hi, my project has PAU to supply OA through VAVs to AHUs, which then supply air to office spaces. This PAU also supplies OA through CAVs to lift lobbies and FCUs recirculate the air there. I plan to submit offline calculator 62MZ calc on LEEDonline. I see "it is acceptable to provide value only for critical zone" and "the critical zone is the zone requires the largest fraction of OA in the primary air stream". So I want to ask that I just need calc OA in office only in the calculator and can neglect the lift lobby? Thank you very much