asp.net data groups in table

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SQL

MVC

Hi there here is my scenario I am wondering if anyone has a solution for me or some advice.

I have an asp.net mvc solution
I have a database with customers inside and each of those customers must be able to create groups with different people inside the groups ex

customer = john group A =  name  =  pieter,
                           cell  =  083xxxxxxx, 
                           email =  ddddd@gmail.com 

                group B =  name  =  johnas,
                           cell  =  083xxxxxxx, 
                           email =  ddddd@gmail.com 

                group C =  name  =  john,
                           cell  =  083xxxxxxx, 
                           email =  ddddd@gmail.com 

When the Customer logs in he must only be able to see the groups he has added to the database. I want the groups to be collapsable and expandable then if the customer selects the group I want them to be able to drag and drop that group and all of the data inside of it into another temp table keeping the original data structure but I want the temp table to show the group expanded.

Here is what I have achieved thus far :
created an mvc app
made small database with table which has 4 columns,name,acc,cell,email
able to display selected table in webpage and then drag and drop into textbox from seperate columns.

Questions:
1) How will it be possible for a customer to create a group and then save it?
2) What control can I use to display my groups minimized and be able to maximize them if I want ?
3) How can I select minimized group from control and then populate temp table in same structure as Minmized group only displaying all of the data.

I realize these are some expert questions but I am a windows developer and i am new to web developing.
Any help would be appreciated