How to add values to a value list?
From the edition of the value lists, in the "Values" section, you can create as many values as you need. Click on "Add value" and enter the name, the environment where will be available and the order in which will appear in the list.
If you only need to add a single value, click on "Add" but if you want to continue adding more values click on the "Add and create other" option. Thus, when you have added one, the values creation form will appear automatically to make the process faster. Once you have all the information, click on "Add" to confirm the creation.