Hi Bastian,
if you want some candidate instances to be displayed, there are basically two options:
- invent them in the UI-controller. With another UI-action, you perform the actual creation (service manager -> modify)
- You immediately create three instances after opening the UI (in edit mode) as drafts. There are several options how to do this, If the candidates are subnode-instances follow a particular scheme, I'd recommend an action on the parent node which (might be parametrized and) creates the cnadidate-instances. You only need to determine how to identitfy them as drafts (this should be some attribute of the node structure, might need to be enhanced) and you need to figure when to get rid of them. Most likely, a determination on save deleting the unselected drafts and converting the others into non-drafts should do.
Was that helpful?
Cheers,
Oliver