Click the "Sprites" tab and click + extension at the bottom of the Blocks area.
The Extension center dialog box is displayed.
An extension is in one of the following states:
1. Ready to go
On Extension center, if an extension is shown as follows, it can be directly added.
2. Update available
If an extension is shown with the icon in the upper right corner,a new software version is available and you can click the icon to update it.
3. New extension
If an extension is shown with the icon in the upper right corner, it is newly supported by mBlock 5 and you can click the icon to download it.
4. Extension added
If an extension is shown with Delete at the bottom, it is already added and you can delete it.
Add an extension
1. Click Add at the bottom of the extension.
2. After being added, the extension is displayed in the Blocks area.
Delete an extension
Click Delete at the bottom of the extension on Extension center.