Enhancement Requests: Improved Row Reminders

Every once in a while, I run into a situation where I would like to send a Row Reminder, but Smartsheet's implementation does not help me.

99% of the Reminders on a sheet are generic and can automated, I'm not talking about those. I just talked to someone and they said "if you don't hear from me in 21 working days, contact me again."

I don't want to have a column for this one-time use. I can do the math. I can open a calendar and say, "OK today is X so 21 working days would be...". I want the computer do it for me.

The Row Reminder options are a selection and that's fine -- when the date can be framed as one of them. 

Please add four options in the on dialog.

X days before 

X days after

X working days before

X working days after

where X is user entered.

I will submit the PER too.

Craig