Tap on "Savings plans" on the App main page, then tap on "Mining Vault".
Your Mining Vault is now created, you just have to now select the amount you want to deposit, valid your deposit and start to earn interests!
You can now make USDT deposits on your Mining Vault, by clicking on "Deposit" then you will have to choose Tether on the assets list, enter the amount and confirm the deposit.
Please note that USDT deposits include transaction fees depending on your membership.
The minimum amount you can deposit is 10 USDT.
Please find below an short video explaining how to do it :