If you want to use a Library Template as a starting point to create your own template, you can copy it.
To clone a Library Template, navigate to Templates > Checklist Templates.
Use the sort and filter features of the grid to find the template you want to use. Depending on your subscription level, you may not have access to all templates. Click the Clone button to create a copy. An exact copy will be created and the copy will open so you can edit it.
Once you save your edited copy, it will be listed on the Checklist Templates screen with the Template category of "Aero"
Editing your copy of the Library Checklist is just like editing a Checklist Template that you created.
You can edit the following fields on this screen: