Hello there,
Thanks for sharing your requirements here and I will be more than happy to work with you on this task. I do all ODK programming from form authoring, server(aggregate) setup and ODK collect app customization. This includes customized servers. Recent work I did was about the customizing form list such that on each day only one form(for that day) is visible and the rest are invisible to the data collector.
Let's discuss this.
Regards,
Daniel Simiyu.