Is there a way to assign all existing items to a newly created organizations?

Hi all,
We already have several items defined (and assigned) to our initial organizations (S1 - S7). Recently, we created several new organizations (S8-S12). We need to assign all existing items on these new organization but it will take so long if we assign the items one at a time. Is there a way where we can select all (or several) existing items and assign it to the new organizations?

Thanks!