Hi @Mervan,
It is possible if you mean username. Refer the following KBA;

Thanks for the answer. I am not a member of the link you sent. different, any suggestions? 

 @Yasas Kasthuriarachchi 

Hi @Mervan,
That is strange since you are registered as a customer you should have that access. Could you please try logging out and log back again. If not @KristenGastaldo would assist.
Thanks & Best Regards,
Yasas 

@Mervan - I’ve updated your permissions and you should have access to the knowledge base now.

@KristenGastaldo Thank you for return. 

@Yasas Kasthuriarachchi  I just want the username registered. Do not save the password.

I couldn't see the explanation of my question in the link description you sent. :) 

Hi @Mervan,

It is not possible to remember just the username. Enabling the remember me cookie will remember both the username and the password for the relevant user and the login screen will give the options to login as the remembered user(without having to enter the password) or as a different user. 

thank you for your answer @Charith Epitawatta