You can put the name of the application on the alternate shell:s: line in your .rdp file, e.g.
This article discusses the connection settings that are stored in the Default.rdp file on Windows Server 2003-based and Windows XP-based computers. https://learn.microsoft.com/en-GB/troubleshoot/windows-server/remote/remote-desktop-protocol-settings
Supported RDP properties with Remote Desktop Services https://learn.microsoft.com/en-us/windows-server/remote/remote-desktop-services/clients/rdp-files
Hope this resolves your Query !!
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