This is a quick guide on how to make an Application Catalog shortcut that opens in Internet Explorer by default.
Below is an example of the target URL your shortcut will be made from, keep the quotation marks in and add your SCCM Server Hostname
“C:\Program Files\Internet Explorer\iexplore.exe” <YOURSCCMSERVER.domain.com>/CMApplicationCatalog
Copy the above link, make your changes. Once on the desktop right click > New > Shortcut and paste your amended link in the path… BOOM you’re done.