Microsoft Dynamics NAV / BC - How to Setup default company for user?

Hi Readers,

I think most of us know this but someone asked me and I also did it for one of my customers. I thought it makes sense to have a small blog post for same so that I can reference it later too.

When we start Microsoft Dynamics NAV / Business Central it auto start with a company. In this article, we will discuss how we can set a default company in both clients.