After the services have been created, you can change some of the service parameters without going into the editing screen. To find the desired service, you can either use the search field, or find it in the list yourself. If you enter the first letters of the service name in the search field, the system will automatically display the appropriate results.
In the table, you can, without going to the editing window, change the service price, and also enable or disable it. Since all pre-installed services are not initially priced and are inactive, you can easily select the services that you will use, set the price for them and turn them on without editing.
Do not forget to save the changes after you edit the table!