Does Gantter have the capability to add a profit margin onto tasks or resources?

Is there a way to edit the function of an extra column as I've seen done in Microsoft Projects?

Thanks

You can create a resource called budget and give it a value (i.e. $100,000). Then if you create various cost resources such as people, equipment, supplies, etc with negative cost values and assign them to your tasks you will always know the P&L of your project.