title: Visio 2010 UML Sequence diagram - lifeline does not have enough connectors
body: <p>I am using Microsoft Visio 2010.</p>
  
  <p>I am drawing a UML sequence diagram.</p>
  
  <p>I added object Lifeline and started drawing diagram. Because the diagram is very long, at one point there would not be any more connectors to connect the arrows to. See this picture:<img src="https://i.stack.imgur.com/fc2ZJ.jpg" alt="No more connectors"></p>
  
  <p>I understand that probably it is not good idea to put so many processes on one diagram, but it seems to me to be the best way to describe the whole process. And I only need a bit more space to continue the diagram!</p>
  
  <p>So, how to configure the lifeline to have more connectors?</p>