Subforms Implementation

[wroos]

Hello,
You might have a look at previous discussion here:

How to pull data from previously submitted form

You could do this using the pull data function as outlined in the support article Pull Data Functionality in KoBoToolbox. Maybe this post discussed previously should help you better understand the concept:

and

Linking Forms

Hi What you are looking for is more of a longitudinal data collection with relational bases for the data being collected which is not supported within the system. We have no way of directly setting up for a different form (project) data to be linked to another form. The only workaround apart from the groupings recommended is to have someone process the data and then you incorporate pull data functionality to pull previously collected data.