How Do Mutliple Sales People Prospect in the "LEADS" module without calling the same leads?

How Do Mutliple Sales People Prospect in the "LEADS" module without calling the same leads?

We have 4 sales reps and the Leads module does not have real time intuitive knowlodge to make the sales rteps dont call the same people at the same time. How can we crate a fluent prospecting sytem where the salres reps can go out bound without calling the same leads.