How do I work settings Sitemap1,Sitemap2 ?

[msn]

Hello
How do I work settings Sitemap1,Sitemap2 ?
When more than 300.000 pages
I want the establishment of the files : Sitemap1,Sitemap2
What is the right way ?
I read to you in the commentary of the installation :
( Google doesn't support sitemap files with more than 50,000 pages. That's why script supports "Sitemap Index" creation for the big sites. So, it will create one sitemap index file and multiple sitemap files with 50 thousand pages each.
For instance, your website has about 140,000 pages. The XML sitemap generator will create these files:
"sitemap.xml" - sitemap index file that includes links to other files (filename depends on what you entered in the "Save sitemap to" field)
"sitemap1.xml" - sitemap file (URLs from 1 to 50,000)
"sitemap2.xml" - sitemap file (URLs from 50,001 to 100,000)
"sitemap3.xml" - sitemap file (URLs from 100,001 to 140,000)
)
I want you to give me full detail how
I do not want a detailed explanation please

[admin]

Hello,

if you have more than 50,000 pages indexed on your site, you should manually create empty files with these names in domain root:
sitemap.xml
sitemap1.xml
sitemap2.xml
sitemap3.xml
sitemap4.xml
etc.

If you have more than 300,000 pages, 7 empty files should be created.

Then set permissions for every xml file to 0666 and run sitemap generator.