Modifications in the standard ESS WD abap application

Hi

I have a requirement in the travel request of ESS application which is webdynpro abap.

When i select create travel request and in the first screen give the travel details and after clicking on review button at the bottom it is navigated to other screen in which we find Final action section where there are two radio buttons 1) Save 2)Save and send for Approval .

Now my requirement is we have two remove those two radio buttons completely and place the static save and save and send for approval buttons at the bottom.

For these static buttons i have to perform action where i found in the standard application it is not directly calling standard methods at the controller level but it is performing action based on the dynamic text of the " forward" button on action navigate-> start navigation ..........so how can we perform the similar action with the static buttons in created in FITE_REVIEW component .

Thanks in advance.