Secondary Ledger option

Hi,

We have requirement to create a secodary ledger to our existing ledger for the reporting purpose. So please let us know whether we can achive followings using the secodary ledger option.

1. Primay ledger balances or Manual journals or subledger journals should not be affected to the scondary ledger.
2. We want enter the journals to the scondary ledger Manully and it should be not affected to the primary ledger
3. Also we want to know creating scondary ledger is affected to the primary ledger subledger accouting or not. If we used "Disable conversion" option.

If we can acheive this please steps of setup the secondary ledger.