Context of the Organization 4.0, there are no exclusions- if it is functional within the company, working towards a quality product/service (the ISO uses "relevant"), it has to be addressed within the context of the Org. You mentioned Project Management and Sales, those have a direct impact to the product/service and on ISO (Project: Planning: 6.0, 8.1) (Sales: deals with the customer 8.5.5, 8.6, 8.7.2).
The ISO does not state any exclusions (that was left behind with the 2008), but why would you want to withhold a part of the organization from the benefits of the ISO? ISO is a tool to help a company. Would you want to have sections of the company on the same page, while others were not? The process of information would not flow the same if all of the departments are not held to the same standard. It would be more beneficial to keep all aspects of the business on the same page.