The latter part of your questions is easily answered by making the “general” mailbox a “catch-all” email within the email server admin, ie. Google Workspace, or Office 365, etc. and not within the form settings or role permission settings. Then the “boss” or assigned personnel monitors that catch-all box.
You could also, generate a workflow that “pushes” the activity to a triggered email that sends out to the responsible parties with the details of the form submission. But realistically, those same people should be admin of the site and will get the notification and details with the same information.
Without seeing the editor details. Make sure you are using the ASCEND plan that allows you to utilize more forms.
IF there is a limit to light boxes or forms per page, perhaps create the form on its own page, then add an IFRAME in the light box and then feed your respective form into the iframe.
I hope this helps.
Teejay