Adding an Instagram gallery to your Home Page won't take lots of time and it's easy as pie, just follow the steps described below.

Step 1: Make sure the gallery is created and connected, for more details check the following guide.

Step 2: Then open Shopify Admin -> Online Store -> Themes → Customize:

Step 3: Click on 'App Embeds' and enable ‘Growave’:

Step 4: Open the Home page -> Add block -> select 'Shoppable Instagram':

If you click on the 'Shoppable Instagram' widget, you will see an option to select the gallery ID and also edit the layout:

That's it!