Deadline date for sign-up with an option of sending a reminder to Chair Name(s)

I would like an option to set a deadline for when all the available seats in a sign-up sheet must be registered with an option of sending 1st and 2nd Reminder # of days before the deadline. If there are some missing sign-ups then an e-mail shall be sent to the registered Chair names e-mail addresses with a text like:

You are responsible for the sign-up sheet [name], you are receiving this e-mail because a deadline for when all available seats must be registered has been set.

Name of sign-up sheet: [sign-up sheet name]
Deadline set: [Date and time]
Total spots: [total spots]
Filled spots: [filled spots]
Total missing spots: [total minus filled spots]

If it’s possible it would be nice if this could be a template that could be easily edited under page=pta-sus-settings_settings&tab=email_options