For Example
A user last changed his password on December 1st, 2017 and his admin enabled the password expiration feature at her hospital and configured the duration to be 90 days.
With the newly configured password expiration policy, he'll be able to login and use the app as usual until his reminder period starts, which is 3 days prior to his expiration date.
Starting on the 27th of February, 2018, the user will enter his reminder period. He'll receive prompts when he logs and pins into the application letting him know that his password is going to expire and it must be changed by March 2nd, 2018.
If the user ignores the prompts and does not change his password by the specified date, he'll be locked out of Pulsara.