To set a default role according to the user.

Hi,

I would like to set different default roles according to users. For example, we have the following prerequisites:

1) 3 roles: roleA | roleB | roleC (in this order).

2) 3 differents users: user1, user2, user3.

So, if I log-in with the user1, the default role should be the roleA; if I log-in with the user2, the default role should be the roleB; and so on.

But I don't want to change the order of the roles using "sort priority" property.

How can I do this?

Thanks,

Samantha.