How to set a transaction type as a default value to scope assignment block?

Hi all,

I'm working on a scenario where I have 1 customer specific RfC document that has only 1 follow-up document available and possible (copy of SMAD and heavily customized). Is it possible to a) set the ZEAD ttype as default when inserting the scope to the RfC or better yet b) populate the scope automatically when creating the RfC? I've tried searching the SCN and reqular google (and gone through copy control a couple of times) but haven't come across a solution yet.

My RfC is for specific use only and that's why it only has one follow-up document.

I'm using 7.1 SP10.

Thank you in advance!

- Auli