Showing Visualizations in Particular Positions in Android Studio

I am developing an Application in Android. For the visualization part, I am using Processing. Now I would like to show a number of visualization on one Android Activity.

The standard code for one visualization is the following:

public class MainActivity extends AppCompatActivity {
  private PApplet sketch;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    FrameLayout frame = new FrameLayout(this);
    frame.setId(CompatUtils.getUniqueViewId());
    setContentView(frame, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                                                     ViewGroup.LayoutParams.MATCH_PARENT));

    sketch = new Sketch();
    PFragment fragment = new PFragment(sketch);
    fragment.setView(frame, this);
  }

The code found on the "Processing for Android" website works for a single visualization. Now I would like to extend this to a number of visualizations each given a specific (x,y) position on the Activity Layout. Which methods allow me to do that?

Can you point me in the right direction?

Kind regards,

Niels