This Guide is using Depositing from Private Key Wallet as an example, but the Deposit procedure is the exactly the same for Metamask or Ledger Users.
Check out these Guides to connect your Private Key, Metamask or Ledger wallets:
GO TO MY WALLET
From your tokens list select the token you want to deposit and then click the DEPOSIT TO CONTRACT link
In the popup window adjust the amount you wish to deposit and click the DEPOSIT button
Wait for your transaction to be confirmed by the Ethereum network
This usually takes a couple of minutes but may take longer if the network is congested or you have altered the GWEI value in the popup.
As soon as the transaction is completed, your Contract Balance will be updated accordingly along with the transactions history.