Yes! Please check this article to see how to set a range of dates where there will be no work: http://help.placker.com/en/articles/388993-how-to-set-and-manage-work-days-and-hours-in-the-gantt-chart#h_2fe3ee90ca
Can I set holidays / non working in the Placker
Setting holidays, vacations, exceptions in the project calendar days
Written by Reinder Visser