Since Coinosh is a decentralized wallet, you'll need to set up a Coinosh Naira wallet to sell cryptocurrencies. Here's how to do it:

1. Go to "Settings" and click on "Naira Wallet."

2. Select "Create Wallet" and provide your email address.

3. Enter a password that you can easily remember.

4. After creating the wallet, a 4-digit verification code will be sent to your email address. Enter this code to complete the account setup.

Once your Naira wallet is set up, when you sell crypto, the funds will be sent to your Naira wallet. From there, you can easily withdraw the funds as needed.