Possible to allocate/transfer multiple activities via collaboration?

Summary:

Hi

At the end of the working day, we can have multiple unassigned activities that are not allocated to a specific resource or engineer. We are currently exploring various options to manage this more effectively, and one approach under consideration is the use of Collaboration groups.

However, it appears that activities can only be manually dragged and dropped into the collaboration window one at a time.

Could you confirm whether there is a way to allocate or transfer multiple activities to a collaboration group at once?

Thank you.