Advice for design and implementation of the below architecture.

Hi,

I needed suggestion on designing and IOT application. 

I am going to describe it with an example flow which is similar to my existing requirement.

-> Consider there are 2 groups of users with a group head each. Each group have 4 members.

-> There are 4 machines and respective 4 things created in thingworx( whose parameters are linked to machine tags)

-> Each machine's data, information and related operations will be assigned to particular users from both the groups

-> There is one general mashup designed, which will should the respected machine information when the respected user login's to the application.

-> And there will be common set of services designed that will be linked to the mashup.

Question:

How to display data and information of different machines, when that respective user log's in the application(Mashup) on that same Mashup. 

I have drawn a diagram for better understanding.

Now is need some advice on how to achieve this architecture . 

Regards,

Sri1