At "Asset Overview", click on the "Risk Limit" column to adjust your position risk limit for the different type of coins respectively.
Next, to adjust risk limit, you may click on the risk limit level bar and select accordingly. Please take note of the initial margin as you adjust the new position value. If you choose to adjust the risk limit to 200 BTC, the initial margin required will become 2%.
To complete the adjustment, please click on "Confirm".