Changing server loading screen & installing custom sirens

Hey guys.
I’m new here so remove or move this if it isn’t in the right place though, my community has a server up and running of which I am learning all of the basics of uploading scripts / mods to the server.
So far I’ve uploaded some scripts and vehicle mods though what I’d like to do now is to swap out the “Before_Map” of which is that 2D loading screen with the pixel character, what I want to know is how would I go about removing that or uploading our own custom loading screen?
Where in the server files would all of the loading screens etc be located?

Another thing I’d like to know is a good, proper way of installing custom sirens to the server?
So far I’ve searched the forum and all solutions found don’t seem to be working, unless I am doing something wrong though could someone explain to me how to correctly go about installing custom sirens?

Thanks

For the loading screen, that’s default, feel free to take a look around and the forums for loading screens, I have made 2 and Syntasu has made one etc. Download install, done.

Sirens also work best client side…

Here’s a couple resources that could be of help

And if your ever unsure of where to post take a look at the below