I created two domains and set up Conditional Forwarders on the both Domain Controllers:


Checked with nslookup:
nslookup other.local
Server: localhost
Address: 127.0.0.1
Non-authoritative answer:
Name: other.local
Address: 10.15.7.16
Added new Trusts:


test
folder properties:



Adding a user to a group
Get-ADUser -Server itdrde.local
cmdlet Get-ADUser at command pipeline position 1
Supply values for the following parameters:
(Type !? for Help.)
Filter: *
DistinguishedName : CN=Administrator,CN=Users,DC=itdrde,DC=local
Enabled : True
GivenName :
Name : Administrator
ObjectClass : user
ObjectGUID : a042afb6-cdc5-4541-b3a5-13421a57f55e
SamAccountName : Administrator
SID : S-1-5-21-2750926062-265679144-4090989696-500
Surname :
UserPrincipalName :
DistinguishedName : CN=Guest,CN=Users,DC=itdrde,DC=local
Enabled : False
GivenName :
Name : Guest
ObjectClass : user
ObjectGUID : 3cf295e2-7563-4541-a11f-aa932481fe0a
SamAccountName : Guest
SID : S-1-5-21-2750926062-265679144-4090989696-501
Surname :
UserPrincipalName :
DistinguishedName : CN=krbtgt,CN=Users,DC=itdrde,DC=local
Enabled : False
GivenName :
Name : krbtgt
ObjectClass : user
ObjectGUID : 7e5230ac-3f39-4475-81d5-106bdbe09e24
SamAccountName : krbtgt
SID : S-1-5-21-2750926062-265679144-4090989696-502
Surname :
UserPrincipalName :
DistinguishedName : CN=Vasya First,CN=Users,DC=itdrde,DC=local
Enabled : True
GivenName : Vasya
Name : Vasya First
ObjectClass : user
ObjectGUID : 9545ec4a-2e73-4d03-a0eb-f7ea34acf4c7
SamAccountName : vasya1
SID : S-1-5-21-2750926062-265679144-4090989696-1112
Surname : First
UserPrincipalName : vasya1@itdrde.local
DistinguishedName : CN=OTHER$,CN=Users,DC=itdrde,DC=local
Enabled : True
GivenName :
Name : OTHER$
ObjectClass : user
ObjectGUID : 5c4c7136-a134-49d4-9082-46134d17e646
SamAccountName : OTHER$
SID : S-1-5-21-2750926062-265679144-4090989696-1115
Surname :
UserPrincipalName :