You will need to make an Internal Transfer from your Wallet to MetaTrader by following the below steps;
Click on "Internal Transfer."
Select "Wallet to Metatrader."
Select the wallet or currency.
Select which MetaTrader Account you wish to transfer to.
Enter the value of the Internal Transfer.
Click on "Request Transfer" to execute the Internal Transfer reviewing any exchange that is taking place should you be transferring between different currencies.