ALWAYS pedal when you shift. We do not want to tear up the derailleur
Use one shifter at a time.
Cross chaining is where both gears, front and back, are both in the smallest sprocket OR both gears are in the largest sprocket. These scenarios will most likely critically damage the rear derailleur or lock up the chain. Most of the time, keep the chain in the middle gear up front. The left shifter controls the front derailleur.
If the up front gear is in the small sprocket, make sure that the right bar shifter is not all the way forward. If the up front gear is in the large sprocket, make sure that the right bar shifter is not all the way backward.
Please watch the Catrike video at the top.