Change group order
From LimeSurvey Manual
The groups and questions in the groups are in order displayed. You can simply click on the group or question and drag it to the right place to re-order.
Starting in Version 1.92: You can always re-order questions and groups, even if there are conditions. You don't need to delete conditions. This is because Expression Manager converts any conditions you enter via the Conditions Editor into a Relevance Equation, and is able to detect, such as via the Show Logic File button, whether you have used any variables before declaring them.