Still working on this project..
Having some problems accessing password protected parts.
Steps are easy if you can acces your Homeseer in the local network without password. ( I have this part protected for security reasons)

Steps:
Download the freeware tenServer and install on the Homeseer server.
[Link: tenholder.net]

Create a Ip device on the Nevo.

Device:
Name It the function you want.
Homeseer Toggle (In my case)

Settings Page:
Connection method : http:https
Url: [Link: 192.168.1.100]

Functions:
Add Functions

Function: Kitchen light (Device name)
Command :A1 (Homeseer device Code)

You can add many as you want.
Just assign the functions to buttons

The button will toggle the Homeseer device you have created.

There are lot of other options in tenserver
All the options are available just from url and can be used in Nevo.
Best is to create a Ip device for every option like events, command etc.

All can also doen from 1 Ip device in that case the command line will be a bit longer.