there isn't a trivial way to block things and force something
There probably is a fairly trivial way to draw people's attention to the fact that they can customise their username. People are generally both thick and incurious, so it won't occur to most of them that they can do it, and they won't be able to work out how to do it unless you put a step by step guide right in front of them
There probably is a fairly trivial way to draw people's attention to the fact that they can customise their username. People are generally both thick and incurious, so it won't occur to most of them that they can do it, and they won't be able to work out how to do it unless you put a step by step guide right in front of them