The vivosmart HR has the ability to start a timer and record a dedicated activity. The data displayed on the device can be customized by adjusting the Activity Options from Garmin Connect app or web. The vivosmart HR can display up to five different data pages. Pages 1-4 can display up to two data fields per page and page 5 will display the time and date. The available data fields on a vivosmart HR are:
Calories
Distance
Heart Rate
Heart Rate Zones
Timer
Sign into Garmin Connect from a personal computer.
Select 
(top right).
Select Device Settings under vivosmart HR.
Select Activity Options.
Select an Activity profile (Run, Walk, Cardio, Other).
Choose how you want the data fields displayed on each page.
Select Save Settings at the bottom of the screen.
Sync your device.
The data fields are now changed.
The data pages can be viewed by swiping the screen on the vivosmart HR while the timer is active. Notifications will display while in an activity, however no other features can be accessed or viewed while in a timed activity.