If you're making repeated transactions to the same account from your Keplr wallet, setting up your address book can be a handy way to save time . 

1. Click on the hamburger menu on the top left corner of your Keplr wallet and click on Address Book. 

2. Then click on [+ Add New] and fill out the details. If a memo is required, the receiving exchange will provide one, along with the deposit address. (Keplr does not require a memo to receive transactions.) Otherwise, feel free to leave the memo section blank. Click [Save].

3. You can autofill the details of any address by selecting the entry in the Recipient section. 

4. You can go back edit or delete the details at anytime by clicking on the pencil or trash icons, respectively.