Questions Regarding Icon Design Upload Process

"I have some questions about uploading icon designs:

1. When uploading an icon, should I choose the category based on the icon type (such as business, technology, food, etc.), or should all icon designs be uploaded under the 'Graphic Resources' category?

2. When uploading an icon, is it mandatory to checkmark the 'This is an icon' option?

3. If the 'This is an icon' option is checkmarked, should those designs be uploaded as SVG files, or is it acceptable to upload them as EPS files? Also, is this a professional approach?"