How to re-order groups on the page

I’m having a hard time getting the “groups” of questions to display in the order I’d like. Sometimes, it seems to add the new group to the bottom. So then I start over thinking I can get it right – – but then – – it then adds new groups to the top!?

How can I specify the order in which I’d like to display the 3-4 different groups of questions that we will have?

Here is the shortcode – – I tried making something up for groups, and obviously it’s wrong:

[faq style=”accordion” ordergroupby=asc orderby=desc]

Thanks a bunch for this great plugin!