The Jaxx wallet offers selected number of cryptocurrencies that have a wallet interface inside Jaxx. To enable any of these wallets, you can go to Menu>Wallets. Once you selected the token/coin from there, you are able to see the wallet page by scrolling through the carousel until you found the token and then you can click on the coin ticker.
If you happen to be looking for a cryptocurrency wallet that is not in the list of Menu>Wallets, unfortunately that means we currently do not support the coin and it cannot be manually added. If you would like, you may send us a request to add it by submitting a ticket at http://bit.ly/JaxxSubmitSupportRequest.
To retrieve the unsupported tokens you have already sent to your Jaxx wallet, please read: Can I transfer my ICO tokens into Jaxx?