I want to take advantage of the Groups Website option in the Add-on Groups Menu option.

However, the URL generated uses the FIM Server I entered at installation of Add-on. I followed the example guidelines by just giving the hostname only. e.g. fimone

The URL generated by the Add-on uses httpS://

Is it possible to edit the Add-on config files somehow to produce an URL like

http://fimone.fim1.local/IdentityManagement/aspx/groups/MyDLs.aspx

instead of

https://fimone/IdentityManagement/aspx/groups/MyDLs.aspx

No big deal, the user can edit the URL in the browser but to do so would mean extra education/documentation etc etc.

This can be changed through registry:

https://msdn.microsoft.com/en-us/library/ff800821%28v=ws.10%29.aspx

You can do the change through group policy preferences, or some other method you prefer (ConfigMgr compliance settings for example).