You might need several scanning methods. Maybe you have different types of equipment, some connected to AD and some not. Active Scanning is for AD connected computers. Users are not computers, so if you wan't to know more detailed information about them add AD Users path(s) to scanning methods.
In practice I use 1) AD Domain scanning (restricted by OU filters to scan workstations and servers OU:s), 2) AD Users scanning for several OU:s and 3) IP scanning for the rest (non-Windows).
Lansweeper scans individual computers and tracks AD users and logons (if configured to do so). In the asset dashboard you'll find User info showing users who have logged to asset. From the user dashboard you'll see all computers a particular user has logged in.
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Active Scanning