Event/item groups and events/items are shown in the chronological order in which they were defined.
However, in ConfTool Pro you can quite easily change the order of how they are displayed.
For event/item groups, please go to this page:
Overview => Settings => Manage Event/Item Groups
Click on the button "Change Order of Event/Item Groups" and then use drag and drop to change the order of the items (see image).
For events/items, please go to this page:
Overview => Settings => Manage Events and Items
Click on the button "Change Order of Events/Items" and then use drag and drop to change the order of the items.
If you want to re-assign an event/item to another group you have to edit this event/item and change the corresponding group:
Overview => Settings => Manage Events and Items => Edit Event/Item
Go to the option "Event/Item Group" and choose a new event/item group.