Open the Ultima Farm app. Suppose the farm is completely full, you still have coins on your balance, and you want to transfer them to a wallet.

To transfer PLCUC, click on the PLCUC icon in the Balances section. 

You can transfer the coins to the main wallet only, it’s impossible to transfer coins from the farm to other wallets.

Enter the amount you’d like to withdraw, taking into account the 3% transfer fee.

To complete the transaction click on the "Transfer" button.  The program will ask if you really want to transfer the specified amount to the wallet.

Just click "Yes".