First add all the picklist values in the depedency field for controlling in field depedency.
Then you can modify the pickist values in the record type.
Go to setup -> Build-> Customize-> object-> Record type -> Picklists Available for Editing ->Edit(Pickilist field in the Picklists Available for Editing ) ->save
Based on the record type you can do it.
First add all the picklist values in the depedency field for controlling in field depedency.
Then you can modify the pickist values in the record type.
Go to setup -> Build-> Customize-> object-> Record type -> Picklists Available for Editing ->Edit(Pickilist field in the Picklists Available for Editing ) ->save
Change the values (For each record type).
Can you please let me if you want any help?
If it helps choos this as a best answer!!!
Thanks,
Raj