Sorting Products Manually on Instabuy:

When a collection is displayed in an online store, the products in that collection appear in the sort order that you've selected. By default, products are sorted alphabetically by product title.

You can select 'Manual ordering' and sort the products accordingly:

Steps to follow:

1.  From your Shopify admin

2. Go to Products 

3. Then Collections

4.  In the Products section, click the drop-down list beside Sort, and then select a sort order.

5.  If you select Manually, then you can click and drag the products on the list to reorder them.

Note:

You can also click and select one or more products on the list. Click Move to reorder them to a specific position in the collection.

6.  Click Save to save your settings