How to create Sub-Collection in Dawn theme

Retired Boards Appdev Store Design
1

Collection under collection

2

@Hasan7898 ,

Refer this link.

https://bsscommerce.com/shopify/how-to-add-sub-collections-in-shopify/#:~:text=Click%20on%20the%20’Collections%20page,sub%2Dcollections%20for%20your%20store.