I would like to have a button that adds the current selected persons to an alternate state. The action "copy state contents" replaces the selection in the alternate state. The action "select in field" with something like: ='(' & Concat({$ + Selektion} LINK_PERSON, '|') & ')' is very slow, if many persons selected.
Hm. One idea: create a bookmark first and mark it as additive. Then, as a sequence of actions, replace the bookmark (to save current selectons of the state), then copy state contents, then apply the bookmark (it's additive so it will add previous selections to the new person).
