I'm building a website for kids from WP to Joomla using Gantry 5. I have a question about module, I pretty much understand how to make a module appear for a specific page....but if I want a different module to appear at the bottom of let's say 40 different pages...do I need to create 40 instances of these modules in the same module position....or am i missing something?
If you use this scenario then NO.
Lets say your using Ambrosia which has 5 g5 templates, Ambrosia-Default, Ambrosia-Demo and 3 other menu pages. So you create your module in the Ambrosia-Default outline. If your 40 menu pages are assigned to use the Ambrosia-Default outline then NO you don't have to recreate the module.