How to create a link between your tasks?

While making your office project management, you sometimes need to link you tasks within the software.
To link tasks, two possibilities
-> 1st possibility - Go to the first task and right click, select Link…
Then, go to the second task and select …to

Results:
->2nd possibility - Select the link icon at the top of the planning:
Then, click on the first task and then on the second task
Define a delay between the tasks
You can also precise a delay between two tasks clicking on the arrow directly
Then, while shifting the first task, the successive linked tasks will be shifted as well according to this delay:

Video on this subject:
http://www.planningpme.com/video-links-tasks.htm