As for all deployment packages, you'll need to download an offline installer. It seems that Chrome has an installer for company networks available
here. In Lansweeper, create a deployment package which includes an Installer step. Put the MSI installer onto your package share and refer to it in the Installer step.
We recommend having a look on the Google Chrome online help for reference on how to define parameters for automatic deployment of Chrome. You can find example installer packages
here on our forum.