Using unofficial repo sources

Dear CoreELEC team and community,
I love using CoreELEC on my N2 - really powerfull and well done.
But I am missing the possibility to add unofficial repo sources. The option just is not there in add-on-settings, even if I activate expert mode. Is it a bug or how can I activate it?
Regards
Muhackl

You can add anything you want. At least last time worked for me…

Did you enable the option in System -> Ad-ons -> Unknown sources, or you don’t have/see that option ?

That option is gone because its no longer needed. You can install whatever you want.

Shoog

Totally my fault. I tried to install the repo master.
All works well now. Unknown sources is not there but as Shoog already stated - you don’t need it any longer.