I'm hoping another 10 boxer can give me a pointer on OS. I outgear the place on my team, so my problem is user error :-)

I'm having issues splitting the team for the portals. And reading up on the macros it doesn't look like there is a macro solution.

My team is 2 pallys, 2 priests, 4 shaman, mage, druid.

So I can create two groups to tank, heal, but I'm not sure how many to send into the portal. I've 5 boxed the raid with another 5 boxer and we usually just pick a group to go for the portal, but is that the best way to 10 box it?

I'm guessing I just need practice (awesome repair bills btw) but I'm wondering if anyone has a strat to share?