You could download the debian package on Download Center for Zoom Apps and Plugins | Zoom and move it to the template and then run dpkg -i zoom_amd64.deb to install it.
You could install it using flatpak, this way the package could be updated with flatpak upgrade (like in the template rc.local so it’s running every time the template updates) instead of remembering you need to download the .deb and from where and basically go through the install steps again. The Zoom flatpak package isn’t official though, but it seems well maintained Install Zoom on Linux | Flathub