In this FICO configuration activity you are able to maintain depreciation key where you can assign calculation methods per depreciation key.
IMG Path: Financial Accounting (New) -> Asset Accounting -> Depreciation -> Valuation Methods -> Depreciation Key -> Maintain Depreciation Key
Tables: T090NAZ, T090ND, T090NDT, T090NP, T090NPT, T090NR, T090NRT, T090NSG, T090NST, T090NA, T090NAT, T096, T096T, T091,T091T, T090NH_METH, T090NHT
Initially, you will have to choose chart of depreciation.
On the main screen you will see a list of depreciation keys. Choose one and then jump to assignment of calculation.
If you have one entry, then you will see directly detailed view.
If you have more assignments for the selected depreciation key, you could see following summary view.