Hi,
First, create a device collection.
Now go to membership rules of your collection and select query rule
Now Select edit query statement and Select query language.
select * from SMS_R_System where SMS_R_System.Name in ( )
In the brackets enter the comma separated computer names as shown below
Thats it your machines will be added to collection
After that, deploy the task sequence to the collection created above and make it available to CM Client, Media and PXE. (Before deploying the TS, make sure the content associated is distributed to DPs)
Regards,
Alex