Hi Aleksander,
The parameters are <SPACE> seperated, like most of the command line supported tools.
You can continue passing them after your regular parameter as passed, as many you want.
Ex:
----------------------------------
1. Sample.js "<Path to your project>\<Projectname>.pjs" /p:<ProjectName> /testitemgroup:<groupname - foldername> /testResultLocation:<remotelocation> "SANITY" "abcd.html" "Yes"
2. Sample.js "<Path to your project>\<Projectname>.pjs" /p:<ProjectName> /testitemgroup:<groupname - foldername> /testResultLocation:<remotelocation> "TestsToExecute:SANITY" "ResultFileName:abcd.html" "EmailResultsToTeam:Yes" "EmailAddress:abcd@abcd.com,bcde@xyz.com"
Inside test complete as usual we get them using methods - ParamStr() & ParamCount().
Hope this helps.