From the Home page, either click on the three small dots to the right of the ride that you wish to delete/edit or click on the ride, then on the "Edit" button (a circle with a pencil inside) on the top right.
You can edit or delete the ride in the next screen, and indicate whether you want this for all the trips or just that particular trip.
Note that if your rides are not on the recurrence mode, that is to say, all your trips have a different schedule, you will have to delete/edit each trip one by one.
1. Click on the dots to edit the ride
2. Scroll to the bottom to delete the ride or edit the settings, then click UPDATE.