Core concepts
Leads and qualification
A lead is one form submission. Nothing more is required for it to show up on your leads list. Whether it is actually a good lead is a separate question, one nobody but a person can answer.
Qualify: a person's call
The qualify toggle on a lead, on the leads list and on the lead's own page, is a plain human decision. It has three states: not reviewed yet, qualified, or junk. It exists for whoever is calling these leads to mark, quickly, which ones were actually worth the call.
Clicking the same qualify state again resets it back to not reviewed. It is not a one-way switch.
Filtering leads by qualify state
The leads page has a filter for this: all, qualified, junk, or unreviewed. Use it alongside the search and date filters to narrow the list down to whichever leads actually need attention.