OMJJ Creating New movement types?

HI Experts,

I wanted to discuss about creating new movement types, so that we can add some additional functionality or change standard functionality of a custom movement type copied from standard.

In OMJJ we can control

1. Allowed transactions for a movement type,

2. Description for a movement type,

3. Reversal movement type for a movement type,

4. Reason for movement types,

5. Field selection for a movement type,

6. And some other controls as shown in below screen shot.

But there is no clear document or discussion on this topic....

My Questions are

1. Is it possible to have a new account modifier for the transaction Event keys like GBB, PRD, KON?

2. Is it possible to change the valuation string for a new movement type?

3. We can create new transaction event keys in MM pricing, which can be used for freight conditions for accruals. but is it possible to link TEK to new movement type?

Please help, is there any BADI's which can be used to solve above questions if its not possible by configuration...

Regards

Satish