You can save frequently used addresses as contacts in your Koala Wallet. To manage contacts, press the Apps button.
Finally select "Contacts"
Adding a new contact
To add a new contact, press the "+" button at the top right corner of the screen.
Then enter a name and set the address for that contact. Names and addresses must be unique, you won't be able to add a new contact with the same name or address as another one.
Editing a contact
To edit a previously saved contact, tap it on your list and select "Edit".
Names and addresses must be unique, you won't be able to edit contact to use the same name or address as another one.
Deleting a contact
To delete a contact, tap it on your list and select "Delete".
A dialog will popup for you to confirm the action. Once confirmed, it cannot be undone.
When sending any assets, on the recipient address box tap the contact list icon to display the list of saved contacts. Then select one from the list to automatically set it as the recipient for that transaction.