As default sections order is like the following;
3) Latest Posts
4) Our Team
5) Bottom Carousel
If you want to change this order;
1) Go to Appearance->Editor
2) Open sections.php file
3) You will see the following code blocks;
4) You can change these code blocks positions like on the following example;
5) Be very careful during this process. I suggest you to copy the original code or file to your computer before changing anything.
6) Click update file button.