sub levels in Types

i need to add sub levels in Types for example (residential : apartment - villa ..... and commercial : office - building .....)

Hi Ahmed,
Thanks for contacting us and choosing our product!
Please go to backend => components => JUX Real Estate => Types => new.
Create (apartment - villa ..... and commercial : office - building .....)
Thanks!

thank you for your reply but this is not what i need
i need it to be like main category ( commercial ) and under it 2 sub category ( office and building )