Instantiation of process with BSP action: only through runtime?

Hi, experts

I noticed that on the document that, for GP process with calloable object of BSP, can only be instantiated through runtime enviroment.

that sounds not so good.

the thing is , we dont want end user to see the runtime enviroment , because it's not so user friendly, especially for large implementation, hard for user to find out the right process.

we want to build a custom process center using custom bsp application,

the process is started using the instantiation URL, but if BSP process can not be started using url, it will failed.

i think it's not reasonable for a multi step process, with only one step using bsp, can not be instantiated by url.

any information on this?

br.

zj