Get all personal files off computer now (it will be difficult to get back).
Get receipts if you need them.
Early morning is when invite is sent for a 15 minute meeting. They all title it differently but it will be to the effect of a conversation or touch base. HR can be on the invite and some cases they receive a separate invite.
You will have roughly 15 minutes after the meeting before they deactivate you.
Access to pay stubs will come later so you can download them now or later.
They will tell you in the conversation the details. Make notes.
If you have been through this, help one another out. Add tips below. Good luck to everyone. All jobs are just a JOB. Do not let it define you.