Right-click on the Force Coefficient 1 node and select Create Monitor and Plot from Report in the pop-up menu.

This will create a new node called Force Coefficient 1 Monitor under the Monitors node.

The existing monitors in this branch of the simulation tree are the residual monitors created by the selected models via the solvers that the models use. With the new monitor node selected, the default settings for the Force Coefficient 1 monitor can be seen in the Properties window.

These settings will update the plot every iteration while the solution is running.
In addition to the new monitor node, a new Force Coefficient 1 Plot node is created in the Plots node.

With that new node selected, you can view the property settings for the plot in the Properties window.

Additional properties of the plot can be adjusted via the subnodes of the Force Coefficient 1 Plot node.
To view the plot display, you can double-click on the Force Coefficient 1 Plot node, or right-click on it and select Open from the pop-up menu. A new plot display called Force Coefficient 1 Plot will appear in the Graphics window.

This plot display will be automatically updated with the drag force coefficient when the solver starts to run.
This completes the pre-processing setup for the case and the simulation can now be run to convergence.
Save the simulation.