Meghna + - customisations

HI, I have been working on my website, using Meghna based on their template.
I got to the point where I was able to make it easy for the beginning and hide some of the elements I
didn’t want.
Next I want to edit the menu bar and change/hide some of the items.
Also, I would like to hide the Latest Post section for the time being.
Does anybody know how to do this - in which section in I can make these changes?
Thanks in advance