CTRL
or
⌘
and clicking on them:You can also add the "Select" column to the left panel, to select projects/tasks using checkboxes in front on them.
You can change status, team, deadline and so on. You can also delete multiple projects/tasks (there is a "restore" option, in case you deleted something by mistake).
This feature is only available in the new interface (v2).
?Check 5pm Help on this feature