Please note that by deleting a client you'll delete also the statistics and you won't be able to create a statement.
Swipe left on the client you'd like to delete. Either swipe the whole way to left or tap on the red Delete button which appears.
Alternatively tap on the client, select Edit in the upper right corner, scroll down and click on Delete client.
In the Client section click on the bin icon to delete one client.
To delete more clients select multiple checkboxes, select Actions and Delete.