Bank Transfer doubts

 Hi Folks,

We have following requirements.

1. we want to create one parent bank account under this we have multiple bank accounts, weekly basis system need to transfer the amounts based on cash positioning balances. child account bank account balance = 100000, if exceeds the balance transfer to Parent account.

2. How we can handle exchange rate part in bank transfer.

note:- We can maintain Exchange rates @ reconcilliation/clearing time, but will it have any additional accounting impact if we haven't maintain exchange rate while transfering the amounts?