CB

If you want to install multiple plugins you have to do so 1 by 1 unless already installed in which case update all covers. Implement support for selecting multiple plugins to be downloaded and installed at once to prevent multiple HTTP requests to Joomlapolis in addition to easier user use.

https://www.joomlapolis.com/forum/18-general-requests/238290-feature-request-install-from-web-multi-select#300832