I'm Miles from the Social Care team at Shopify. Thanks for your question. I can see you've already had an answer to your question, but I just wanted to add some more context for you.
After you choose a theme that defines the basic look and feel of your online store, you can customize the theme to suit your unique brand. You can customize your theme content and settings from your Shopify admin by using the theme editor. The theme editor includes a theme preview and a sidebar or Edit menu that you can use to add and remove content, and to make changes to your settings.
You can rearrange dynamic sections on your home page - including your collection list. To do this follow these steps:
You can learn more about theme customization in our handy guide here.
If you ever need a hand, please make sure you get in touch with us and we'll be happy to help.
You can rearrange dynamic sections on your home page.
You can refer on this screenshot here.
1. From your Shopify admin, go to Online Store > Themes.
2. Find the theme that you want to edit, and then click Customize.
3. On the section that you want to move, click ⋮⋮ and drag the section to a different place.
4. Click Save.
Hope this helps.