Missing library need help !

Hi everybody !
I discover with pleasure XOD.
I like a lot!
I used to tinker with Arduino and some libraries!
I can not find these libraries here!
Can anyone recreate these libraries or explain to me how to do it if it is not too complicated.
As libraries I use DMX MAX485 (Professional Light Control), Rotary Encoder.
Thank you for your feedback and your precious help!