Edit the Floor and Roof Sheathing Tool Library
You can edit the floor and roof sheathing tool library as follows:
- Select System | Libraries |  Libraries. The library browser opens. Libraries. The library browser opens.
- Select the folder Custom Libraries / Sheathing Tools.
- Select a library to see the tools stored in the library.
- Select a tool, and select Properties from the right-click menu.
- Edit the parameters in the Sheathing Rules database view.Framing Tools: Sheathing Methods in Library (floor and ceilings) 
- Click OK when you wish to save the data and exit the database view.
Note: 
  - System tab is only available if you are a system administrator.
