I made a topic specifying about this, and Deadpool replied to me. Here is his post:
" An alt is actually defined as this:
“ Alt is an account that is made by the same user of another account and pretends to be someone different.”
I said:
So basically I said you can change your account, but you can’t use more than one account concurrently, which is an alt. So I said you can’t make alts, the misunderstanding is about what an alt is it seems.
Danny"