Apps security exception in adb.exe (android debug bridge) when using commandline

I am sending this command in a c# .net program to adb.exe like this

string command="shell am start -a android.intent.action.CALL tel:xxx";

Process p = new Process();
p.StartInfo = new ProcessStartInfo("adb.exe", command)
string output = p.StandardOutput.ReadToEnd();

But I get a java.lang.securityexception........requires android.permission.CALL_PHONE

I googled that I need to configure androidmanifest.xml

but where will I put that file it in my setup?