> For the complete documentation index, see [llms.txt](https://docs.3dolphins.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.3dolphins.ai/customer-service/tag-manager/edit-tag-module/add-sub-tag.md).
# Add Sub-Tag
When you want to add a sub-tag to a module, you can use the **Add Sub-Tag** feature by selecting the **'+Add Sub-Tag'** menu, as shown in the following image.
Add Sub-Tag
After successfully adding a sub-tag, you will see a success notification message, and the sub-tag will automatically appear under the parent tag module, as shown in the following image.
