Select the type of calculation you want to do from the menu toolbar. The function controller for that calculation appears in the control area. The controller contains buttons to guide you in setting up and solving your problem. Here is an example.
The InstantCalculator contains text fields for specifying the parameters of the calculation. Each blank field is indicated by a placeholder. You can use

to go from one placeholder to the next.
You can also click
Convert to text input to paste the command for that calculation into the notebook. You can then view and edit the command directly. Press



to re-evaluate the command.