Even if you have set auto depreciation to 'No' in your Tax Profile, you can still manually include assets and depreciation in the Asset and Liability Register. In addition, you can add small business pools or other asset pools as individual assets. Each newly created asset will be assigned its own automated accumulation code, which you can then manually input the depreciation in the Manage Balances section.
For more information on simplified depreciation rules, see Simpler depreciation for small business | Australian Taxation Office (ato.gov.au)