21 December 2012
If you want to separate maintaining of books for Unit II then you can maintain separate books of account and at final i.e at the time of preparing of final reports at the end of the year consolidate both the units final statements. If you not required to maintain separate books for unit II(i.e you didn't want to identify income,expenses,etc... from unit II) then you can insert that unit transactions also in Unit I and in the narration you can comment regarding for which unit it for.
22 December 2012
They also related to the company. If you are maintaining separate accounts for Unit then fixed assets related to Unit II show at unit II books.