Discussion board where members can learn more about Integration, Extensions and API’s for Qlik Sense.
What do I need to do if I need to select more than one field?
Check the last example 'Syntax: Base URL + selections in multiple fields' in this page:
You can put the fields after each other in the url.
Hope this helps
you could also use this extension Qlik Branch
that enable you to select values in fields on opening sheet.