How should the lens and fuselage be put in the camera bag?

It's better to install the hanging head and the fuselage of the SLR camera together, which is more reasonable, not easy to get dust, and used in time, so as not to miss the opportunity to capture. The specific way to put it in the camera bag should be to put the lens face down on it, so that it is convenient to take it out and put it in the bag. Of course, it depends on the height and size of the specific bag. The camera can be placed vertically but horizontally, but it is not convenient to take it out.