1) Is it just under Environment and not Architecture? Sometimes that happens.
ANSWER: every time I try to use this type of scenario, there is this problem of not showing the application option, even though the file is in the same folders as others that work.
2) And for applying, can you drag the scene file from content library onto the viewport and select "Default Load"?
ANSWER: I cant found this option that you said!
files in this format below I can use normally!
View attachment 1058785
for this type I have problems, the empty folder appears, even though the file is located in the main folder for program assets
View attachment 1058800