you can set the following setting to the extended settings and restart the IS:
watt.server.ns.hideWmRoot=false
The WmRoot package should be visible in Developer after restart.
Please use WmRoot services with extreme caution!
They are NOT documented, NOT supported and may NOT exist in a future release. Also webMethods wont offer technical support if you face any problem with these services.
If at all possible, you should use existing, documented, public services which you can find in pub folders in the various Wm packages.
#Integration-Server-and-ESB#Flow-and-Java-services#webMethods