Right, didn't realise it was separate section, now I see the modules section.
Thank you for your support.
I installed 'i-doit - 1.8.3 OPEN' under Debian and it's working fine, but I am trying to install API module automatically. I have 2 questions:
1. Is it possible to install API module from CLI, no UI intervention? (Maybe copying sources inside src/classes/modules/api is enough?)
2. I was following this tutorial: https://kb.i-doit.com/display/en/Add-ons - and I was not able to find 'Modules' tab in UI. Is there some feature that I am missing or is not turned on?