void setup(){
  //The switch that will initiate the Mouse press
  pinMode(2,INPUT);
  //The switch that will terminate the Mouse press
  pinMode(3,INPUT);
  //initiate the Mouse library
  Mouse.begin();
}

void loop(){
  //if the switch attached to pin 2 is closed, press and hold the right mouse button
  if(digitalRead(2) == HIGH){
    Mouse.press();
  }
  //if the switch attached to pin 3 is closed, release the right mouse button
  if(digitalRead(3) == HIGH){
    Mouse.release();
  }
}