How to use Header Options.
1. Go to Dashboard > Theme Options > Home > Flex Slider
2. Upload your Slider Image ( Preferred size is 1200 x 450 pixels )
3. Enter Caption and Text for a slider. HTML is allowed.
4. Not Needed By Right Clicking on Image, you'll get a context menu and from that choose "Copy Image Location". Paste it in this field.
5. After adding many slides, if you wish to delete one slide, click Delete option.
6. Click on Add Slide button to add as many slides as you wish.