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Configure the option variables in the accordionmenu.js as:
expand: “single”
And at the end of your page, adding a script block that calls the amenu.open function. For example:
<script>
amenu.open(“LiID1”, false);
amenu.open(“LiID2”, false);
......
amenu.open(“LiID7”, false);
</script>
Please read the online instructions for details.