I'll second the use Jamba comment.

It makes following so much easier.
You can have a "strobe" option in the Jamba follow, where it attempts to push follow every "x" seconds.
You can enable it to follow as soon as combat ends if you choose.

I personally have follow after combat disabled, but have it strobe follow every 1 second when I do use follow.
When you switch leaders, use the command... /jamba makemeleader all, with all of your toons in the "all" group.
There's a command in jamba to follow the leader, I have this bound to the same key so pressing this has each toon tell all of the others to follow the current leader.
Between my wow macro to promote the new leader to party leader, my jamba setting that toon to master and keyclone putting that toon's PIP in the front, it works very well.

The wiki, stickies and search feature are all your friends.
In addition, if you post what you've tried, want and how its not working, the community rocks.
For the most part, we'd appreciate you reading/researching a little, and at least attempting to get something to work before asking for assistance.