Great demo app and article. Can you please explain how to also do the following:

1. When user submits a lost item — reset only some of the input fields. For example, do not reset the date and time fields.
2. Accept a lost item submission even if some input it missing. For example, even without a date and time.
3. When searching for lost items, do the search even if some input fields are empty (for example even if no date and time are specified).
4. When searching — locate all items that match by location OR by item description (OR criteria instead of AND criteria).
5. Urgently post an example app that uses: “make changes to a thing” (or add it to this app).

Thank you.