Extending the scope

Answer:
Yes, you can change your QMS scope in your next surveillance audit. That change is called "scope extension". You must inform your certification body in advance, that extension can make them need to find a different auditor with different experience, or can increase audit time.

Naturally, I assume that the QMS will be fully implemented in the extended scope.

The following material will provide you information about scope:
- ISO 9001 – How to define the scope of the QMS according to ISO 9001:2015 - https://advisera.com/9001academy/knowledgebase/how-to-define-the-scope-of-the-qms-according-to-iso-90012015/
- free online training ISO 9001:2015 Foundations Course - https://advisera.com/training/iso-9001-foundations-course/
- book - Discover ISO 9001:2015 Through Practical Examples - https://advisera.com/books/discover-iso-9001-2015-through-practical-examples/