Create or update presence states for multiple Occupants in a single request. The request body can either be an object with an entries array, or a single entry object. For each entry, you may identify the Occupant using one of - userID, email, employeeID, externalId, or a name (name or first + last). If status is at_location, an office identifier is required at either the entry level (officeID, or officeName/location/office), or via a root-level fallback (officeID, or officeName/location/office). Entries are deduplicated by user and only the first occurrence is applied.