DB account name change

Hi all,

I have a question regarding DB account..

I've installed SAP B1 Server 8.82 with "sa" account....

what do I need to do if I want to change that use to another one? (ERPUser)

Do I have to install it from beginning? or is there any kind of changes to do?

Or... maybe a way to change it on Client PC?

Can Server SAP B1 use "sa" account, and client use another account???