Once you've poured the water into the insert, set a metal trivet into the bottom so your cake pan won't come into direct contact with the insert. The filled cake pan should be sitting on the metal trivet. Set the lid on the pressure cooker and turn it clockwise until it's fastened in place. Most pressure cookers won't work until the lid is properly tightened. Turn the pressure cooker on and select the cake program setting. If your pressure cooker doesn't have this option, use the manual setting to pressure cook on high. If you're making a light, moist cake such as a sponge, turn the temperature to "Less." Most standard cakes or cake mixes are fine on the normal temperature setting. If you're cooking a dense cake, brownie, or cheesecake, increase the temperature to "More." Check the recipe or box instructions for how long to cook the cake according to the size pan you're using. Take the amount of time given and set the pressure cooker for half of the time. For example, if your recipe calls for a 50 minute cook time, program the pressure cooker for 25 minutes. As the pressure cooker cools down, the pressure will reduce on its own. Once the float valve has dropped down, you can turn the lid counterclockwise and lift it off. To test the cake, insert a toothpick into the center of the cake. If it comes out clean, the cake has finished cooking.  It can take anywhere from 10 to 40 minutes for the pressure to release, depending on the size of your pressure cooker. If the cake isn't done, you'll need to put the lid back on and turn the pressure cooker back on. Check it again after 5 minutes of pressure cooking. Give the pan a chance to cool a little before you take it out of the pressure cooker. You can wear oven mitts and pick the cake pan up or use 2 pairs of tongs to pull the pan out. Set the cake on a wire rack to finish cooling completely.

TL;DR in Vietnamese:
Đổ 1 cốc (240ml) nước vào nồi rời của nồi áp suất. Đặt khuôn vào nồi áp suất. Đậy nắp nồi áp suất và khóa chặt. Đặt nồi áp suất ở chế độ làm bánh hoặc chế độ nhiệt cao. Điều chỉnh nhiệt độ tùy theo loại bánh mà bạn muốn tạo ra. Giảm thời gian nướng bánh được hướng dẫn xuống một nửa. Xả áp suất khoảng 10 phút. Kiểm tra xem bánh đã chín chưa. Chờ bánh nguội khoảng 5 phút rồi lấy ra.