To add an originated account to the cli wallet:
tezos-client remember contract <new alias> <kt1...>
Check if the originated account was successfully added to the client:
tezos-client list known contracts
Show balance of the originated account:
tezos-client get balance for <new alias>
In order to transfer from the originated account, the secret key of the implicit account (tz1...) must be known by the client:
tezos-client import secret key <new alias> <secret key>
Then transfers from originated accounts are similar to transfers for implicit accounts:
tezos-client transfer <amount> from <alias of kt1...> to <destination PKH>
Note that these examples are for use cases when you created the implicit and originated accounts in another wallet and you want to use these accounts also within the tezos-client.
If you want to create an originated account from an implicit account with the tezos-client, then use the command given by @cousinit.