Hi kenner,
Have you customized the form of the lead, the initial screen looks like following screenshot :


And it’s possible to change the leads form like what you need.
For example, I want to make ‘contact method’ section of ‘Details’ tab to ‘Summary’ tab.
Go Settings > Customization > Customize the system > entities > lead >Forms to open the main form.
Select the section you need from ‘details’ tab and drag it to the any place of ‘summary’ tab.

For any sections, you can drag them to the place you need.
Or if you don’t want it shown in the form, you can hide them:
Double-click one section you want to hide to open ‘section properties’ dialog, then uncheck ‘visible by default’.(in my example, hide 'Marketing information' section of 'details' tab)

Finally, save and publish all customization.
Test:
'contact method' section is moved to 'summary' tab, and 'Marketing information' section is hidden.

Regards,
Leah Ju
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