Do not worry this is normal 
To enable locking on the Integration Server, in the IS Admin go to Settings > Extended > Edit Extended Settings and set the value of watt.server.ns.lockingMode=full
Restart your designer or IS to take the changes.
Let me know if it is working.
Just for your information, disable the packages related to VCS on IS if you are not using them.
#webMethods#webMethods-General#Integration-Server-and-ESB