The VPOP3 licence owner name is tied to the licence key, so you cannot just change the name without getting a new licence key.
There is generally no need to change the licence owner name since it is not published anywhere, but if you really must change the name, then you can request a name change if you upgrade to a later version or larger size of VPOP3 or there is a £10 administration fee if you just want to change the name without upgrading the licence. You will need to telephone our sales department on 01484 855801 to do this.
Note that VPOP3 licences are not transferable to a new organisation.