testuser123,
I am not exactly positive on what you are wanting here, but I will try to answer your question as best I can.
If you are not a Mitel VAR then you will need to work the VAR that controls the licensing for your system.
If you are a VAR then just order the license and apply it in the AMC ffor the ARID associated with your MiVO-250 and then download it and install it on the MiVO-250.
Thanks,
TE