Pseudonym can be used to change your usual name to another, however, it does not anonymize (!) an exposition in a double blind kind of way, as the name will still be visible in metadata. It's function is for publishing for a group or something that you are not really the author of, but not really to be anonymous.
There are alternatives though:
1. It is possible to have an anonymous account where we apply an alias instead of your real name,
but this has to be arranged with email@example.com, you will need to provide an alternative email address if you do not want your real name account use this alias as well.
2. It is possible to have a double-blind review in a portal review workflow.
Note that copyright fields will not be hidden if used and that SAR admins will always be (and need to be) able to see the real author because in case of copyright troubles, we need to be able to identify the "real" author.