IIS 10 Default Document for Application Under Website - web-config

Question

Running IIS 10 on a windows 2019 server I have 1 web site and under there I have 20+ applications running. I have been trying to create a default document for each of the sub applications however, ever time I edit one of the sub application it changes for all the applications, not just the specific one I want edited.
The IIS tree looks something like:
www.companysite.com (Site)
Company1 (Application)
Company2 (Application)
Company3 (Application)
etc. (Application)
I initially tried going to each sub application, opening up Default Document and selecting the Add... option which, as mentioned, would change for all applications.
In the applicationHost.config file at the bottom I tried to manually enter the following, making an entry for each and this also did not work. It seems to only read the first entry and use for all applications:
<location path="www.companysite.com/Company1">
<system.webServer>
<defaultDocument enabled="true">
<files>
<add value="Company1LandingPage.asp" />
</files>
</defaultDocument>
</system.webServer>
</location>
I even had a clear tag in there after the files entry and that did not help. Thoughts?
My web.config file has not been touched and has the following:
<configuration>
<system.webServer>
<defaultDocument>
<files>
<clear />
<add value="Default.htm" />
<add value="Default.asp" />
<add value="index.htm" />
<add value="index.html" />
<add value="iisstart.htm" />
<add value="default.aspx" />
</files>
</defaultDocument>
</system.webServer>

Answer 1

The problem seems to be with your configuration, how did you set the default document for each sub application? In my iis, each sub application has its own web.config file. Their file list names(<add value="" />) should be in separate web.config files, should be like below config, not your above setting.
Application1:
<configuration>
<system.webServer>
<defaultDocument>
<files>
<add value="Default.htm" />
</files>
</defaultDocument>
</system.webServer>
</configuration>
Application2:
<configuration>
<system.webServer>
<defaultDocument>
<files>
<add value="Default.asp" />
</files>
</defaultDocument>
</system.webServer>
</configuration>