Using variables to change the opacity of items Design Downloaded from: https://www.sketchappsources.com/free-source/2567-chandelier-lighting-illustration-sketch-freebie-resource.html

Setting up a calendar event using Proto.io Templates and Variables

Filtering Activity Feed (Templates) by Tags using Container States Filter / container states

animation using state transitions

Simulation of a Photo Capture

Car rental created with related drop down menus. Submenu depends on parent menu selection