*
I hope this snapshot will help you.
Make sure that you have replaced the (file name) as shown in picture with your new remote file.
Then go to popups in channel or menu bar
copy and paste this code and make sure that you replace you file name!

-

• Auto Join-Welcome Notice *
  .On:/load -rs (Your File Name).mrc | echo @Help 8,10 Join-Part Notice On
  .Off:/unload -rs (Your file name).mrc | echo @Help 8,10 Join-Part Notice OFF
  .Add channels :/run $mircdirYourfile name.mrc