So I picked up a couple of "holy candle" type charms, but I can't for the life of me find the button to use them. Can anyone help?

So I picked up a couple of "holy candle" type charms, but I can't for the life of me find the button to use them. Can anyone help?

 

During a scenario, click the Backpack icon in the bottom-right of the screen.  

 

That should pop up a window displaying all the consumable items the party has at their disposal.

Ermehgerd I must have fat-finger clicked that thing a thousand times, each time it kept popping up my deck. But yes, with careful tapping, the backpack does indeed pop up my charms. Thank you so much!!