I found it helpful to make a hotbar with Cure I, II, III, Shroud of Saints, and my mana potion on it, and put the bar right up next to the party window. I don't actually click the buttons, but I use them so that I can quickly see at a glance if I have any FreeCures available and to efficiently track when my mana regaining abilities are up. I'll post a picture this evening when I'm back on my home computer!