I recommend you take my tutorials if you’re new, they’re designed for that. I will DM you a link to them with a free coupon.
Simulating is when you press the green play button at the top of the viewport on the level tab or at the top of your blueprint above the event graph, where you press right mouse button and would type “set visibility” and add your scene component as the target.
While in landscape mode, make sure to switch back to select mode instead of the paint foliage or sculpting tools. In the beginner’s tutorial I do a little landscaping and that will be free in your DM’s too.
Yes, Game Mode runs in play mode or while simulate.
I can’t answer the question because I don’t understand what youre doing the engine that can’t be set to simulate and done like that.
If you want to basically see the same thing in simulate that you do in the design phase during development, go to the top of the level tab and click the icon buttons along the top horizontal edge of the viewport and examine the options. There will be an option to use the level blueprint. If you can access the level scene components in the level blueprint, you can set the image with a material on it to hidden or visible false on ‘Event Beginplay’ and use no default pawn or a spectator pawn to float around the world in ghost-camera mode or free-floating camera spectator mode (as described).
That would be the same as not simulating and the image would be hidden.
I don’t know if you’re making a video game or a movie, a simulation of some kind or just a scene and that too would affect my answer, mostly if you’re making a video game is what I know how to answer.