You need to split the elders quorums and Relief Societies.
- Log into Leader and Clerk Resources
- Click on Organizations > Elders Quorum
- Click on the Callings tab, choose All Organizations, and print yourself a copy of that information
- Click the blue pencil icon to the right of the "Elders Quorum" heading
- Choose "Split Quorum" from the menu
- Use the breadcrumbs (above the "Elders Quorum 2" header) to go back to quorum 1 (All Organizations > Elders Quorum 1)
- Click on the Members tab
- Check the box for everyone in elders quorum 2
- Click the "Move to" button and choose Elders Quorum 2 and clean up anything that needs to be fixed in Elders Quorum 1
- Set up callings in Elders Quorum 2
- Repeat for Relief Society
There isn't an easy way to manage family home evening group leaders beyond what you have already done. You can't create organizations for the individual family home evening groups, so just listing them like you have is about as close as you're going to be able to get.