You can sort controls using custom JS code.
The available all controls are:window.DEARFLIP.defaults.allControls = "altPrev,pageNumber,altNext,play,outline,thumbnail,zoomIn,zoomOut,zoom,fullScreen,share,download,search,pageMode,startPage,endPage,sound,search,print,more";
Some controls appear at certain conditions, removeing them from here, will also make them hidden all the time. like autoplay only apears if autoplay is enabled in setting.
Add a custom HTML block with the code below:

Customization:
Here we have moved zoom in out button before outline and thumbnail.
<script>
window.beforeDearFlipInit= function(){
window.DEARFLIP.defaults.allControls = "pageNumber,zoomIn,zoomOut,play,outline,thumbnail,zoom,fullScreen,share,download,search,pageMode,startPage,endPage,sound,search,print,more";
}
</script>
