For full setup instructions, please see our Live Segment Setup Guide noting that Strava Premium is required for using Live Segments.
First ensure your Strava account is linked to the ELEMNT Companion App by navigating to the Profile page, then selecting Linked Accounts, then Strava to enter your log-in credentials.
Strava Live Segments should now be accessible on the Settings page of the ELEMNT Companion App where the feature can be toggled on or off.