What is the trajectory of electrons in a plate capacitor?

Look at the experimental setup and think how the acceleration voltage of the electron gun and the capacitor voltage influence the trajectory of the electrons.
Diagram of experimental setup of the experiment to deflect electrons in an electric field.

Does the voltage of the plates Vp have an influence on the way of the electrons? If so, what influence?

Does the acceleration voltage Va have an influence on the way of the electrons? If so, what influence?

Please choose two hypotheses.