need some help to upgrade a program

hi their guys im a new people in the house, well I'm currently working on a windows Application which is a lanbase txtchat, so basically it already works only on lan i did try a test to try if it's working so their i figure it out how.

so is a P2P (peer to peer)
also works on diff. OS and also works on x64 and x32 bit
i got here the source code
i can upload it and give the details how to make it

but first like the title saids i want to put some additional upgrades on it like for example im going to use it on a school. so what upgrades can i link in it.

classmanagement program
attendance sheet.
printing
and other that you can think that i can put into it

of course together with the source code and screen shots of the said program
i got other made programs here im more happy to share this to you guys and its all working so you help me and ill help you too.