On the right side, choose Identities. The preview box will show which identities have been added.
To add a new identity, select the “+” sign at the bottom of the page.
Fill in the fields with the appropriate information. Ensure that the email addresses in the identity list do not include duplicates. For example, if “name.surname@ue.katowice.pl” already exists, you don’t need to add it again. After filling out the fields, click Save.