How can I add my offers to the "collection" section❓

video1.0<iframe src="https://www.loom.com/embed/45deecaa50b84603a57f4056c80fb1dc" frameborder="0" width="1920" height="1440" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>14401920Loomhttps://www.loom.com14401920https://cdn.loom.com/sessions/thumbnails/45deecaa50b84603a57f4056c80fb1dc-90751aeae871cac4.gif120.0435How can I add my offers to the "collection" section❓