How do I sync/pair my Wahoo Kickr smart trainer with my Garmin Venu?

I want to use my Venu to record my indoor training on my Wahoo Kickr smart trainer but I’ve tried to sync using sensors but it doesn’t find the smart trainer. I can sync my cadence sensor. I’m currently using Wahoo workout app to record the distance, time and then manually adding it to the garmin indoor session on connect. Thanks