You can withdraw available cash from your account at any time.
To transfer funds back to your bank account, you must click on the "Withdraw money" from your personal cabinet. You can reach the link by clicking here. An initiated transfer is usually registered on your bank account within two business days.
Note that funds must be sent back to the same source they came from, in order to comply with anti-money laundering policies.
If you want to make an exit from some investments and receive the money in your account faster, you can sell the investments on the Secondary Market. You can find out more details about the Secondary Market by accessing the following LINK.