IMPORTANT!! Separate Packages for Different Clients in single instance

Hi,

I'm working on Creatio Cloud Instance (Freedom UI) where I need to create separate packages for multiple clients in this single instance.

Challenges:

1. changes made in one entity i.e. Contact for client 'a' should not reflect on UI or anywhere when employee of Client 'b' log into system.
2. Load the modification based on client.
   
   
   Platform: Creatio:Energy (freedom UI)