thanks for your reply and suggestions:
Appending might not be an option, because the values of the instances need to be changed on the fly, that is done well in coll.
I adopted my questions in the attached updated file in order to be more specific.
I could use the following external (store coll in pattr), but hesitate because its not max standard:
I feel there should be a simpler way without coll, too. Because mainly its just storing 4 figures assigned to an id, and restoring them. On top this should have presets.
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