Choosing the amount of monuments to spawn on a world

I have created a small world, and it only has 3 monuments on it. Is there a way to increase the amount of monuments, or is there a setting in the config somewhere that says how many monuments you can have?

 

You need to pickup ready map with monuments for rust:IO

 

You can't. But you can look for a Mapseed here Map Gallery - Rust:IO