In the MATLAB Command Window, enter
simulink
The Simulink® Library Browser opens, using a tree structure to display the available libraries and blocks:

To view the blocks in a library listed in the left pane, select the library name, and the list of blocks appears in the right pane. The Library Browser provides access not only to Simulink blocks but also to SimEvents blocks.
Для работы с разделом SimEventsкаталогаLibraries в нем необходимо сдвинуть вертикальный ползунок вниз:

For details about the Library Browser, see Simulink Library Browser (директория R2013a>Simulink>Getting Started with Simulink>Simulink User Interface) in the Simulink documentation.