By having your employees clock in to the appropriate project in the timesheets module, it will allow you to see how much time each employee spends on a given project.
1. Tap on a project you are interested in
2. Here you will see the total number of hours that your employee's have logged on the project. Tap on the total
3. Here you will see a breakdown on a per-employee basis. Tap on an employee you are interested in
4. Here you can see the timesheets that the employee has logged against this project