for the term, salary on month basis ("Shared Salary"), which shall be the difference between (a) the basic salary and (b) the aggregate of the amounts ("aggregate amount") derived respectively from a given percentage of teh revenues generated by the various surgical and non-surgical services ("services") provided by the cosmetic medical centre on a monthly basis, where a list of such servies and percentage of revenue to be considered in the calculation of the aggregate amount is set out in schedule 1 hereto, provided that (AA) if the amount of the aggregate amount for any calendar month is less than the amount of the basic salary (each a "Relevant month"), the shared salary for such relevant month shall be deemed to be zero (such that no shared salary shall be payable to the employee) and the difference between the aggregate amount and the basic salary for such relevant month ("shortfall") shall be accumulated and carried over to subsequent months during the term to set off any shared salary (If any); and (BB) teh company is only required to pay teh shared salary (or balance thereof) for any month after all the relevant accumulated shortfall for teh preceding relevant months (if any) have been set-off against the shared salary for such month and/or the preceding months; and