NUget Package Manager Change Catalog

I am trying to install Entity Framework using NUget package manager using the following command

Install-Package EntityFramework -Pre

but it gives me the following error

The term “Install-Package” is not recognized as the name of a cmdlet, function, script file, or executable program. Check the spelling of the name, or if the path was included, make sure the path is correct and try again.

I noticed that on the console I get

PS C:\Users\tz>  Install-Package EntityFramework -Pre

I think it should be

PM  Install-Package EntityFramework -Pre

If i'm right how to change this