I've got this major problem with healing that I'd like any help I can get with it. If I'm assigned to heal only those that are in range of me, and they are like scattered around both in area and in the groups of the raid frames, I struggle to keep them up if the damage is relatively high on all of us, including me. What do I have to do, spam the most major heal and an common instant?
I generally have the hang of healing, both in raid frames/UI and in regular encounters and I know well how to heal individuals or groups in regular scenarios, it's just this "heal 3-4 others, including myself" while we run around getting heavy damage all of us.
In case you need a specific class, I was thinking on resto druid at the moment (though I had the same difficulty with a priest last year, though the disc was easier with its shield spam, though not totally).