Using the Effect Select Panel
Click the Distortions, Filters, Scenes, Borders, Accessories, Emotions, Particles, Animations, Funny Objects button in the effect categories, CamMask will show the Effect Select Panel,
As shown in the figure, here is the effect select panel
You can use one kind of effect by clicking the option lattice in the panel, the selected one will displayed by a blue lattice with thick lines. You can cancel the selection by click that lattice again
The buttons on the right side, respectively represent Add new effect, Delete effect, Download new by effect library.