Can I dynamic add elements in EditTemplate?

[Hao]

Hi,

I want to change the EditTemplate such that I can add some format information for a tiddler, e.g. team member of a group.

So I add some code in EditTemplate to edit the field.

Current code in EditTemplate is 

<div>Member 1: <span macro="edit member1"></span></div>

<div>Member 2: <span macro="edit member2"></span></div>

<div>Member 3: <span macro="edit member3"></span></div>

<div class="button">+</button>

Now I want to add a node 

<div>Member 4: <span macro="edit member3"></span></div> 

when I click "+".

And add

<div>Member 5: <span macro="edit member3"></span></div>  

again when I click "+"...

I'm not sure is there any way to dynamic create a node in EditTemplate?

What currently in my mind is add a node

<div macro='slider chkAddMember Project##EditMembers "+" "Add more member"></div>

and put some control code to generate nodes in "Project" tiddler. But I've got no idea how to control it.

Does anyone get any idea about it?

Thanks a lot..

Regards.

Hao