First, download and unzip the attachment.
Then run "RAD Studio Delphi Tokyo Rio 10.3.1" and browse to the following file:

Code:
C:\your_path\to\CEF4Delphi\packages\CEF4Delphi.dproj
Then you should install it as shown in the following image.
After doing this, you have nothing to do about CEF4Delphi.
You do not need to create a lib file for CEF4Delphi or anything else.
Everything becomes automatic due to the component installation action.

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