In the example, below, there is a tie at the end of the bar before the first ending. Therefore, there should also be a tie leading to the note in the second ending.

First and Second endings .png

There are a couple of ways to address this. One is to do it manually. The other is to use the plug-in. The option I use most often is via the symbols menu:

  1. Select the whole note in the first bar of the second ending.
  2. Press the letter Z to open the Symbols menu.
  3. Click “More Options” as I find it easier to navigate this view. 
  4. Go to Notes and choose either the above or below tie. In this case the below tie.
  5. Drag it as needed.  

Symbols ties.png

The other option is to install the plug-in Ties into Second Ending.

  1. To install the plug-in, open a score in Sibelius and choose File > Plug-ins > Install Plug-ins.
  2. Choose Notes and Rests and select “Ties into Second Endings”.
  3. Install the plug-in.
  4. To add the ties enter the notation in the second ending. Select the second ending and run the plug-in.

Ties into second ending.png