This option comes in handy when assigning workstations to users. Normally during a scan, lot of unassigned workstations will be discovered. Then these workstations will have to be assigned to technicians individually after verification which could be a tedious process. "Suggested users" option under Assets >> Workstation is meant to relieve you of that trouble as it tracks the last logged-in information of those workstations during Probe scan and automatically suggests who could be the users of those workstations. With this, you can bulk assign workstations to technicians in one click.
There are some prerequisites for this functionality to work:
1) During a scan, the probe fetches the last logged-in username from each target machine's Registry (HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionAuthenticationLogonUI)
If SCCM scan is used, the last logged-in username is fetched from SCCM.
2) The probe gets the domain name from the last logged-in user name. (For e.g., if ZILLUMTest is the last logged-in user, then the domain name is ZILLUM)
3) Probe gets the domain controller name from the domain name or it gets the domain credentials from ServiceDesk Plus Cloud (For example, the probe gets the domain details of ZILLUM from ServiceDesk Plus Cloud)
4) Probe queries the domain controller to fetch the email address of the user.
5) This data will be posted to ServiceDesk Plus Cloud. If the user is not available in ServiceDesk Plus Cloud, a new non-login user will be added. Otherwise, existing user in ServiceDesk Plus Cloud will be mapped as the "Suggested User". These user suggestions are shown in the "Assign Users" window.
Head to Assets >> IT >> Workstation.
Click Assign Users.

The unassigned workstation list along with the user suggestions will be displayed. The user suggestions is based on last-logged in information available in the workstations got during Probe scan.
Select a user from the suggested user drop-down if you wish to change the user.

Once you select an user, the department to which the user belongs will also be shown.
After you have selected the users, click Assign User.