Support › MB Frontend Submission › form submission and progress bar
I was just wondering is it possible to display a progress bar when a form is submitted until the sent message is returned?
if not then can I do this via before form submission and after submission hooks?
The frontend form does not support showing the progress bar like that. You can use two hooks rwmb_frontend_before_process and rwmb_frontend_after_process to add some JS and CSS code to show something before and after the form is submitted.
Refer to the documentation https://docs.metabox.io/extensions/mb-frontend-submission/#form-actions