Suspend project for months

Hello,

I was wondering if there was a way to suspend or freeze the whole project for a specified period.
Kind of like long holday for everyone, for every tasks.
I went to ‘Calendar’ under ‘Project Settings,’ but I got lost trying to create months of suspension. Could someone tell me if there is a better way?

Thank you in advance for your help!

Perhaps import from iCal may help (that is, create a holiday calendar somewhere else and import into GanttProject). I didn’t try, though. Another option is to just make your own calendar file – it is XML with quite trivial structure:

    <date year="2022" month="4" date="15" type="HOLIDAY"><![CDATA[Good Friday]]></date>
    <date year="2022" month="4" date="18" type="HOLIDAY"><![CDATA[Easter Monday]]></date>

You still need to add one <date> tag per day but it can be automated.

Thanks Dmitry,
I will try your suggestions. Thanks!