The 'Versions [MCC]' tab for MPLAB® Code Configurator (MCC) shows up near the 'Project-Dashboard' tab in the lower left corner of the MPLAB® X screen. The 'Versions [MCC]' tab provides information about the versions of the component groups that make up MCC. These component groups are called "libraries." Over time, multiple versions of the libraries may be available. In the "Versions" area, MCC can be configured to use a specific version of a library for the current MCC project.
The green check mark shows the library version being used in the project. The gray dots show optional libraries that can be loaded. Some have already been downloaded to your computer and some need to be downloaded in order to use.
Right-click on the library in question (Version 1.55) and a window will appear with a 'Mark For Load' option. Select 'Mark for Load'. The library will be highlighted in bold text and the Load Selected Libraries button will appear.
Click on the Load Selected Libraries button. The green check mark will switch to the selected library which will be used in any future code generation by MCC within the project.