anon848905 and I discussed this further offline. It turns out you can have an “OR” for actions by users, or for tags and this can be specified in Paratext, you don’t need to edit the .fil file.
If you select an action and activate the list of users, you can Ctrl-click one user then Ctrl-click another user and they both are selected. You can also ctrl-click more than one tag in the middle column. You cannot ctrl click in the left column, among “unread”, “read”, “resolved” or “unresolved”.