Auto run in battle

I have a skill I am working on called auto regen which, every 50 frames, heals the entire party for 500 health. I have it working but there are a few problems:

1. The +500 doesn't show up, it just happens.
2. Other characters can't use skills while this is active so they have to wait the time while it is working and then they can use skills again. It's suppose to be a background effect so if the enemy is casting a very long time activating skil, we are being healed during it.

I'm trying to recreate what Auto regen was in FFIX if you have played that game, if possible.

First off, I think this was already made before but I guess it'd be nice to see it work. Since you put it as Auto-run, I suggest you try parallel process? And make it check if the status "Auto Regen" is on them and then do the +500, show animation (make or find an animation with numbers and set it up so a 500 comes up), and then wait. Then make it loop. I think the loop should break once the status is gone. (I'm blindly guessing here).

One question: Are you putting this in the battle event area in database where it says "Troops?"

Thats what I tried and it works BUT it acts like one spell, instead of well idk how to put it, It doesn't have an effect after the turn is over where it should if it works right. Also it said if you hit f1 that I can only do Autorun and parralell on maps and I was hoping there was some kinda loop whole to it.