Leads Rubix

This is a CRM application, that will be used by organizations to track the status of leads that they get in their day to day activities.
The sales agent will be able to make call after logging inside the app and then their managers will be able to track the call records on the assigned leads to the sales guys.
Overall this application will track the complete life cycle of the leads assigned to the Sales guys, so we need permission to make call and read call logs.