The Ledger Chrome app gives you the possibility to create and manage as many accounts as your want. An account is a collection of addresses and has one balance.
Here is an example of Ledger Nano having three accounts:
Each account has a name, a color and a balance. The global balance on the top right is the sum of all your balances.
To add a new account, click on "+ ADD AN ACCOUNT" (top right).
You need to chose a name and a color.
By clicking on your account name from the main page, you will get access to all details and operations:
To change your account settings and get access to the account path and public extended key, just click on "ACCOUNT SETTINGS"