How do I add a new account if I already have one in the wallet?

[anton-trunov]

So, I generated a wallet using zli wallet init command.
I'd like to check if I can make transfers, so I thought I would create a new account and transfer some ZILs between my own accounts.

./zli account generate did not work for me, it just prints

start to generate  2  accounts
end generate  2  accounts

But .zilliqa file stays the same.