How To Add User Access That Never Expires

Hi,

I'm trying to add a subscription that never expires. When I go to "Payments" from "User Info" I can click a button under the "User Access" section that says "Add Access Manually". When I do that it requires me to set a From/To date. How can I make the "To" date mean "never expires". Currently the maximum date I can enter is for the year 2022.

Thanks,
Scott