When creating or editing a parent post, you can only affect the parent post's information. It would be great for end users if they could also create new child posts, edit existing child posts, delete child posts, or add/remove/modify links to child posts from a parent post form.
I undestand that you want one form that does it all, but that is not possible in Toolset Forms this way.
What you can do for example is create a Major admin front end page where you do that with Views and Forms.
Then, you can create, delete, manage how you like most of the content in one place.
But I warn to not do that as it will sooner or later (depends on the amount of content) run into performance issues.
That would as well happen if you have one form that does it all in one place.
Sooner or later you run in problems about what to do with this form (what to not do) and it'll on large sites affect performance.
Also the interaction with each single form and it's design, behavior and purpose would not be accessible anymore.
Hi Beda, thanks for your reply. I understand it sounds very simple from an end user perspective, but may in fact be very difficult to achieve or cause all kinds of performance issues. Still I thought it would be good to ask, particularly because one of your competitors (GravityForms) also does not have an out-of-the-box solution yet. So it might give Toolset an advantage if something could be developed to support this. For Gravity Forms there is an add-on plugin by GravityWiz (see hidden link) which enables nested forms, but that one also has its limitations (e.g. risk of messy data when exporting form entries with contents from nested forms).