CR = Compulsory Redundancy
VR = Voluntary Redundancy
In the UK pools of affected people are drawn up and a number of jobs to go identified. People then get an offer to apply for VR. If you are accepted you sign to go. If insufficient volunteers are agreed it goes to compulsory redundancy for which there are three meetings.
Mtg 1 = the whole pool is informed that they are 'at risk' in a group where N jobs will go
Mtg 2 = about 10 days later individuals are called and told they are either no longer at risk or that they have been selected to go
Mtg 3 = for those picked to go is about 10 days after that. At this call the redundancy is confirmed and paperwork detailing the payout gets signed.
You can appeal, but are unlikely to win, to be honest who wants to win when they will only target you 3 months later anyway?