Once your guests, prospects or friends have opted in, you can send them an email which you can save as a template for later re-use. See basic email section here:
support.toastmastersclubs.org/doc/item/m...nel#membership-tools
You can't add an attachment, but if you save upload the document in File Manager, you can get the URL for that document and put the link in your email.
See
support.toastmastersclubs.org/doc/item/linking-to-files
Alternatively you can send an email with an attachment to the group via your system email client.
Non-members can't sign up for roles, but your VPE or Toastmaster can assign roles to them by using a dummy member - create a member with no email address as a placeholder to use on your agenda..