To manage your tokens, go to MyEtherWallet and select the "Send Tokens" tab. Plug your Nano S, select the Ethereum app and go to the settings of the app to activate "Browser support" and "Contract data". This will enable the direct connection to the browser and MyEtherWallet will be able to detect your device (note that if you wish to use the Ledger Ethereum Chrome application, you'll have to disable browser support).
Select the base address you wish to manage.
You can now receive and send tokens from your Ledger Wallet.