Collaborating multiple pbix files

[vivek3795]

I have multiple files on my Power Bi server which takes a lot to maintain it, I wanted to know how to merge multiple pbix files into one master file which will generate one master embedded code but maintaining the clients data confidential and build the master embedded code in such a way that when the client log in he should see only his data(kind of manage roles and applying parameters type thing, and I tried it didn't work).