With account types in the general script for example I think there are sellers and buyers ? and people can select one or the other, but these are not available in the user accounts and can not be changed by the user ?

As an example a seller can list and also be a buyer but if somebody logged in as a buyer and wanted to sell, they could not, they would need a sellers account, but they are unable to do this from their cp ?

In this case they would probably need to register again ? more so the question relates to somebody who just wants to use saved searches for an update ? maybe a buyers account ? but then they decide to sell / they can not do so with the above problems in place ?

I have looked and there seems no way to make that field visible to users ?