Once you have created a series of services in Service Planning, you can easily change the title of the series with just a few clicks. Here's how:

1. Events tab
2. In the list of services, find one of the services of the series you'd like to change the title to
3. Click the title of the series to be changed
4. You should see a list of all the services in the series. If this is the series you'd like to change the title to, click the Modify Series (next to the big pencil icon)
5. Enter the new series title and click Save