I'm not sure about your need. The link you share seems to be a list of posts rather than a certain article. But we have launched a group buying App on Shopify, called JIOUKOU.
➡️ View on Shopify App Store: https://apps.shopify.com/jioukou
With Jioukou, you can enable your store with group-buying function. Let your customers easily create their own group and buy with their friends without any effort.
You can check our demo store to know more detail about how the campaign and each group buying work.
If you have any further question and needs, contact me:
▪︎ Email: firstname.lastname@example.org
▪︎ My facebook: https://www.facebook.com/profile.php?id=100002587823769
Following up App's latest news, welcome to join our Facebook group.