I'm unable to understand what are the "conditions"...
The conditions allows you to vary the time while the timers are running. You can also use them to manage the time spent on your favorite activity, because the conditions allows you to gain/lose time, also to perfectly manage the activities of your children (like video games, or watching cartoons). Look at the below typical scenarios to help you understand:
How can I start multiple timers?
In the timers list touch and swipe right to left on a timer to open the options panel. You'll find the start/stop button.
Where I can find the route I done during the jogging?
Touch a timer from the list to enter the details page, touch the radar icon in the bottom left corner (near the start / stop button) to enter the map and discover the route.