Logging into the NNS dapp using an Internet Identity creates a main account for you in the ICP ledger.
You can create one or more linked sub-accounts or attach a hardware wallet to your account.
Step 1: Go on the 'Tokens' tab in the left menu.
Step 2: In the top table, select 'Internet Computer'.
Step 3: Select 'Add Account'.
Step 4: Select the type of account to add, which is 'New Account'.
- New Account creates a new subaccount linked to your Main account address in the ledger.
- New Account (Hardware Wallet) adds a hardware wallet to your main account address in the ledger.
Step 5: Enter an account name and hit 'Create'.
You now have a new account with this name in your list.