Visual studio Uipath Activity Creator extension, how to include (assembly) a .dll?

I used for the first time the Uipath extension to create a custom activity to use an external library. After several attempts I was able to create the package to add to Uipath Studio and it seems to work until starting the project it shows the error that the corresponding assemby is missing.

I tried to add the dependencies using Nuget package explorer and also the .dll file but the error remains.
I only fixed it by moving the dll to the Uipath studio installation folder. Is it possible to include it directly in the custom activity package created, so that you have a quick installation?

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refer this video might this will help you to resolve your query:

It seems to me that this is the previous method to create custom activities before the release of the visual studio extension.
Anyway I’ve already created the custom activity and imported it on Uipath studio and it works if I insert the dll of the library (to which the code I wrote in the custom activity refers) in the Uipath installation folder (not the project).
My question was whether you could omit this step and assemble this external library in the custom activity package so that you only need to move one file.