From the Overview screen, find the "Ghost Vault" box and click on the "Deposit" button.
Select "Ghost Vault" from the menu on the left hand side of the UI wallet and click on "Deposit From Wallet"
This kind of transaction will privatize the receiving address when viewed with a block explorer.
Creating a 2-way ghost transaction can be done from the Ghost Vault screen. First, click on Ghost Vault from the left-hand menu, then click on the "Withdraw to Wallet" button.
Next, click on "Send to ghost key" and fill in the amount you wish to send, a ghost key for the vault you wish to send to. You will also need to enter your wallet password.
This transaction will privatize both sending and receiving addresses when viewed with a block explorer.