App w/plugins did, that need to be executed

I understand AppImages are supposed to only have one binary running.

However, is it possible for an app to “shell out” to execute some binary and process it’s results?

FreeCAD has a great appimage. However, its add-ons require a number of external tools and libraries installed on the base system, for FreeCAD to execute.

Is AppImage the right tool for this?