How do field folks log in to to the app to use the offline forms?

Is there a way to generate multiple logins so that field personel can log into the app and access the forms in order to use them offline? 

Unfortunately, multiple logins in the mobile app is not possible, however, you can use the Kiosk Mode, and the form can be filled offline.

So, let's say you have a tablet, and everybody uses it to fill and submit the form, it can be done offline, once you got connection, the submissions will be sent, example:

Let us know if you have more questions.

Hi, we have multiple tablets. So would this still work for us?

Kiosk Mode in offline mode will work only if you have ticked the form in the Offline Forms setting.