Add to list from another list

I am making an event app. I would like the user to be able to invite guests from a list of people. I am able to make the user invite one and one guest from the list of people, by tapping/klicking each one. But I have not found a way to let the user choose and add the whole list at once. Any tips?

Example: The Event has a many-to-many relationship to Users. The logged in user can make his own Lists of Users, e.g. a list called Family - a lilst of the people in his family. Then he should be able to invite the whole family to an event.

Hi @Gjermund ,

To process multiple records, it will be batch processing, will require make list countdown, with finish action doing related actions.

Many posts regarding this.

That looks good, thank you very much for the help!