From the Money tab, you will see your Buckets listed starting with your Unassigned Bucket.

To put money into an existing Bucket, tap on one of the existing Buckets from your list and then tap the "Add" button. From there, select an option to transfer funds from another bucket, start a recurring transfer, or make a deposit from your connected external account into the bucket.

On the Money tab in the Buckets section, you can also tap the "+" button to create a new savings Bucket, or you can select an existing Bucket and then tap the "Edit" button on the top right to make changes.