How install a patch of Unity?

Hello,

I wonder how installing a patch of unity? Does it apply directly to the version that we have or create a different directory?

Thanks in advance for your response.

You can install to a new directory and have 2 or more separate versions of Unity installed. Or keep 1 version installed by overwriting the existing installation, this is the default.

I experimented. The patch must be applied to the current version. This will erase the old version and install the new one.