Adding extra stuff to the server - Wastelands404 in Arma2 operations

[judgedreddz 1]

Hi Im new to being a scripter, although i have a server up and working i cannot seem to find out where the walls and buildings are located for building bases in my FTP files, the files i do have, dont seem to refer to these items

could someone paste and copy a link where they should be and how to change them and load them to them to my server?

the items i want to sort out are:

1) i want to add more water

2) more base building stuff such as depots, walls

3) i want to add more food

4) i also want to change the misson time from 20 minutes to 15 mins

5)i want to stop the nightime lasting 12 hours lol - i really hate this

so these are my questions i would really appreciate some help here

thanks for your time and any responses i may get