Odk

hello,
I have two questions please,

  • If at all have given options on which one is to chose from and i also
    given the provision of "others specify", but one has more than one to note
    down, how can i provide for more than one others specify in ODK in that
    when they write an answer, ODK gives a provision for another?
  • The second one is, in case i have very many options and one is to
    either tick YES or NO but for the next part of the same question i want
    them to indicate the amounts for each option they ticked YES, probably ODK
    has to bring only those options ticked YES, how can i go by that in ODK?

thanks alot