I have a membership and I made a custom field that's a date field for Membership Billing End Date. We have a monthly recurring billing and a yearly recurring billing. Currently for a custom field for dates, there's only Right Now (today) as an option. I am requesting options for both past and future such as 30 days ago, 30 days from now, 60 days ago, 60 days from now, 90 days ago, 90 days from now, and 1 year ago, 1 year from now.