To move a few tasks up or down as a group

I frequently need to move tasks up or down in “Resources Chart” tab and the only way I found is to move them one by one. Is there some option to group a few tasks together to move them as a group at once?

No such option, sorry.

Thank for your quick response. I’m using ganttProject on a daily basis, and I real fun of this software.
Hope this feature will be implemented someday.