On DeskTime, you can group employees into Employee teams, such as Marketing, Sales, Management, etc.
Create an Employee team, go to Settings → Teams, and click on the "Add new team" button.
Then a window will open, where you can type the name of the new Team.
To assign an employee to a particular employee team, go to Settings → Team members → Edit → Personal details → Team.
You can then define which applications are productive, unproductive or neutral for each employee team. For example, Facebook and Twitter could be productive applications for social media managers while they would be unproductive for others. See more information on how to change productivity settings here.