Certify a group

I'm interested in my group being certified rather than the company, is that possible?
 

Answer:

I am not sure what you mean, but you can certify any type of company or any type of business, but each certificate is issued for a specific company. So, if you have a group of companies, you can certify each company (one, various or all), or you can also certify the group as the main company, but in this way, the certificate is only for this main company, no for other companies of the group.
This article about the scope of ISO 27001 can be interesting for you “How to define the ISMS scope” : https://advisera.com/27001academy/knowledgebase/how-to-define-the-isms-scope/
And also this article about how to get certified “How to get certified against ISO 27001?” : https://advisera.com/27001academy/blog/2010/02/15/how-to-get-certified-against-iso-27001/