Modifier Properties don't show up for a collection [duplicate]

Question

I have a collection and inside there there are several objects. I want to add a modifier to all the objects in the collection, but I couldn't find the modifier properties when I select the collection. How do I get the modifier properties to show up?

In another object that's separate from the collection, the modifier properties are shown:

Answer 1

There is no way to make the Modifiers Properties Panel show up when you have a Collection selected.

While an object like a cube, curve and such (objects like cameras and lights can't have modifiers either) can have a modifier that affects its mesh data or other data like UVs, Collections are only a placeholder with functionality (like an empty, but without origin).

They them self do not contain data that could be affected by modifiers.

The idea of using a collection to apply modifiers to all its children, is itself not bad, and I believe used in other software, but in Blender you need to add a modifier to one of the child objects and then copy the modifier to all other children in the collection/selection.

Solution:

1. Add the modifier(s) to one object.
2. Select all objects you want to get the same modifier(s). If they are all children of a collection, you can RMB to Select Objects in the Collection and all its children will be selected.
3. Make sure the object with the modifiers is the last selected/active one (visible by having a brighter outline in the 3D View).
4. Press Ctrl+C and choose Copy Modifiers, as shown below:
   
   

Now all the selected objects have the same modifiers.

Happy Blending