Step 1: Update the Bitpie wallet to the latest version 4.9.013 build 49014, if the Bitpie wallet has been installed, overwrite the installation and upgrade. If using the iOS version please download the Bitpie "Pro" app.
Step 2: On the Bitpie Wallet-Homepage switch from [ROSE system] to [Testnet Transfer]
Step 3. Enter the Receive Account and Transfer Amount.
Step 4. You can Query Testnet transactions by selecting History on the ROSE Testnet Transfer Page.
For instructions in Chinese please see here.