Every Lucee installation comes with an Administrator that allows configuring settings about the Lucee process and websites. There are at least two Administrators, one for the Server Context, and one for each website on server that is using Lucee (Web Context).
To access the Administrator a running Lucee website, go to
yourdomain.com/lucee/admin/web.cfm for the Web Context's Admin, and
yourdomain.com/lucee/admin/server.cfm for the Server Context's Admin
Replace 'yourdomain.com' with whatever host Lucee is running in in your situation
You should see something like this:
note: On the first time logging into the Server or Web admin interfaces, Lucee will prompt you for a password.