You can add/delete tags directly to the Tagging panel only if a tag list is not assigned to the project. Do the following to create a tag:
Enter the name of the tag in the field in the tagging panel.
Tip: To remove a tag, simply click the X icon next to it in the All Tags list.
note: When no tag list is associated, changes to the tags in the tagging panel affect only the script being edited. When you open a new script, the original tag list is displayed.
If a tag list is assigned to the project, follow these steps instead: