Creating Shortcut for entity selector "by face"

Hi,

I've got a model with many platic ribs (shell elements) and I want optimize the thikness of each rib. For that I need to assign for each rib an own property. So I click on Property>Assign>elements>by face and repeat the same procedure for every rib.

For saving time I would like to define a key shortcut (ctrl+F) for selecting elements by face.