Sweet CMS / 2 Questions

Design help CMS
1

Hi,
I installed Sweet CMS and it works great!
Only 2 questions:

  1. I use filters (In exclusive mode), how can I set the “All” filter as an active one when lunch the page?
  2. I use Form text input as a search engine, how can I disable the submission of the form when I click enter (I use it only of search filter)?