When you install this package an BestPractices a custom button is created, but it is not immediately displayed in the page layout.
Add the Custom Button

Go to the Setup area for the system. Navigate to Create | Objects
Go to Matter Object

Matter Page Layouts

Select Page Layout to Modify

Add BestPractices Button to Page Layout

- Click the Buttons section of the Page Layout editor.
- Using your mouse, drag the BestPractices button to the Custom Buttons area shown in figure 3.
- In the Custom Buttons section, optionally move the buttons in the sort order you prefer.
- Click Save.
If you have multiple Matter page layouts, you will need to repeat this process for each.