For different layout views for the panels in your library window click on the Layout menu at the bottom right hand corner.
1. Groups Panel - lists your group sets and associated groups
2. Tabs panel includes three tabs:
The library window column headings e.g Author, Year, Title etc. can now be dragged to reposition as desired.
In your EndNote library you can mark your references as read or unread by simply clicking on the grey dot. The read reference will no longer appear in bold. If you have the reference open use this icon
If you do not want your unread references to appear in bold in your library window you can adjust this option in your preferences. Go to Edit>Preferences...>Read/Unread and uncheck the box Show unread references in bold text.
You can also rate your references. Highlight your reference then click on the dots in the Rating column to create your own star rating.
In the reference window the Rating field can be set to show or not to show as required - use this drop down menu to check or uncheck the box Show Rating Field.
EndNote allows you to create multiple libraries however it is strongly recommended that you work with one library only.
Save and Backup
It is important to keep a back-up copy of your library. Save your library or part of it to a compressed file as a back-up. See Saving and restoring a compressed copy of a library from the Saving your library tab under Windows.