It is possible to use multiple Edge website entries that each use different credentials. By using Profile names, it makes it possible to have a certain profile any number of times, making each unique or repeating it as many time as needed.
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Go into the Properties of a Website entry.
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Make certain the Display option is set to Embedded (tabbed) , or these steps may not work.
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Set the Web browser option to Microsoft Edge, in the Common – General – General tab.
Web browser -
Input the desired website URL.
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Go to the Advanced tab.
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Check the Profile name option and input a name.
Note that Remote Desktop Manager profiles are specific to Remote Desktop Manager and not related to Edge browser profiles.

7. Click OK to save the changes and close the window.