numbering paragraphs/questions in libre writer

hi guys, how are you. can you kindly help me on this one. im creating documents using Libre Office, how do i automatically number documents this way

  1. (a) (i) mmmmmmmmmm
    (ii) nnn nnnnnnnnnn
    (b) (i) nnnnnnnnnnnnnnnnn
    in ms office i used to use ‘listnum’ , so here what do i use.

RFO