If you have a scenario where you have some completed and uncompleted jobs on a day and you want to move the uncompleted ones to another day, you can now hold the Ctrl button and select multiple jobs by clicking them. The border will go green to show you which ones are selected.

You can then select the date to move the jobs to via the green dropdown at the top of the shipping page.

Only jobs that are not yet sent to the truck can be moved.