Whether can you preview only 10 pages?

I am trying to use a pdf that has 32 pages. But when I imported into the program it will only show me 10 pages. If I was to convert it, it will convert the 32 pages. I want to add book marks so people can click on the page they want to see, but I can only get 10 pages. Any idea?

1. Click button "Import PDF";
2. If you checked checkbox "Quickly import (Only import 10 pages to initial preview)", the default page preview range is 10;
3. Don't check it, and the default range is all pages;
4. Even you can set a page range on the form "Custom Range".

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