Local user account created with Powershell is NOT shown in settings "Family & Other people" - windows

Question

I am working on Windows 10 Assigned Access for Desktop for version 1607.
Mission: I need to get Assigned Access to work with Powershell.
Steps done:
I create a new LocalUser account with New-LocalUser and I enable the account with Enable-LocalUser. To check if the account is added, I run Get-LocalUser and see that the account is created (see attachment).
Issue:
To double check I go to the PC settings for Accounts-Family & other people, but I cannot see the new local user account "KioskTest".
I have restarted the computer but the account is not added to "Family & Other people".
I have spent some time on this and I would really appreciate your help, How can I make sure that the added Local user "KioskTest" is shown in the PC Accounts settings-Family & other people, when using Powershell?
I can Set-AssignedAccess, when I do Get-AssignedAccess I can see that it is there. Trouble is, I cannot login to the local user account because I cannot find the account in the settings for the PC.
It's like powershell has "hidden" the local user account from my client computer!!!
ADDED information + updated images:
After some trial and error I found out the following:
Using NET USER username password/ADD --works perfectly! I can find the user account and login as a customer would. The account is part of the LocalGroupMember
The local user account created with New-LocalUser with Powershell does NOT appear in the PC account settings BUT if you click on set assigned access in the Family & other people the system finds the local user account (see attachment). However you cannot login to the account as it seemingly does not have a group membership! Not great for testing :(
Thanks for taking the time,
Karina
See attachment:
Powershell Get-AssignedAccess
PC Account settings Family & other people

Answer 1

In my case it was a group membership issue. I have created some users with powershell new-localuser, but they did not show up in any GUI and I was unable to log on. The users were only visible in powershell with get-localuser and lusmgr. In settings, control panel 'user accounts' and login screen they did not show up.
I just had to add the new users to the local 'users' group. Once this was done, the new users were visible in all settings and available for login.
I was unaware of that local security policy (local policy/user rights assignment/allow log on locally) restricting login to 'Guest,Administrators,Users,Backup Operators'.
Either add the users to one of these groups or add them to the local security policy.

Answer 2

This isn't really a PowerShell issue and might be better suited for SuperUser. But I would guess that this is an issue with group membership. Unfortunately get-localuser doesn't give membership. So something like this would be the PowerShell way to check which user objects belong to which local groups.
Get-Localgroup | % { "`n$($_.name)`n"; get-localgroupmember $_}
Then check through which groups other user objects are a member of and add the KioskTest account to that group using this:
Add-LocalGroupMember -Group "ExampleGroup" -Member "KioskTest"

Answer 3

To validate user is created or not, the below simple command helps. You may try it.
In case user is created you will get below output
Command- net user TestUser2
Output-
User name TestUser2
When user is not present
Command- net user TestUser
output-
The user name could not be found.

Answer 4

I had the same issue. The problem was that when specifying the group I didn´t take into account that before the name of the group needs to go domain or in my case, name of the virtual machine. Therefore the command will look like this:
... -Group "DomainName\ExampleGroup" ...
You can check the existing groups on your machine by typing lusrmgr in Window´s run window.