There are multiple ways to print a task. Go in the folders tree view and select the folder where the task is located. All the tasks for this folder will be displayed on the list situated on the right side of the folders tree.
Then you can do the following:
1. Click on the task that you want to print and then click the Print button on the toolbar (this is the fifth button on the toolbar)
or,
2. Click on the task that you want to print and then go to the File menu and choose the Print Item option.
or,
3. Click on the task that you want to print and then go to the Tasks menu and choose the Print option.

A new window will be displayed so you can choose where you will print the task. Press OK button on this window and the information will be send to the printer.