Service types are the different things you do for your clients that they are paying you for. They are used on Deals and Budgets and people track their time against them.
To set them up, go to Settings > Service types.
There will already be a list of default Service types in your account, but you can add new ones by clicking on Add service type.
You can also define for what purpose will this service type be used: It could be a service or an expense.
Delete a service type
Service types can be deleted, too. Deleting a service type will prevent further time entries for that service type. However, existing time entries will not be affected by the deletion.
Merge service types
Service types can also be merged. To do so, click on the menu under the service type you want to merge into another one and select Merge service types.