On my system (linux) GUI client creates .BitShares/wallet/default wallet.
I know that you can create a new wallet with console
wallet_create <wallet_name> <new_passphrase> [brain_key]
wallet_name (wallet_name, required): name of the wallet to create
new_passphrase (new_passphrase, required): a passphrase for encrypting the wallet
brain_key (brainkey, optional, defaults to ""): a strong passphrase that will be used to generate all private keys, defaults to a large random number
If you do so, you should have .BitShares/wallet/<wallet_name> folder with your new wallet.
Again, from console, close the old wallet with
and open the new wallet.
You can choose account_type 'public_account' when register a new account with as in:
account_type (string, optional, defaults to "titan_account"): titan_account | public_account - public accounts do not receive memos and all payments are made to the active key
If you do so, you can show the balance in the account with the following command:
(but anyone else can see it if they now the account name).
Don't forget to close the wallet before opening the other.