Time to do the exam once paid?
I'm thinking to do my pay in the next hours, however I want to do the exam the other week. This is possible? and how many days I have to do it once paid?
PSM1 is a two week timer on the password you get.
I suggest ordering your PSM I attempt a day or so in advance before you are ready, because it may take one business day to process the order.
Also, Michael is correct. Your password will have a 14 day window of usage from when it is sent to you.