About screen sequence group field in vov8

hello gurus.

where we define screen sequence groups, like AU order, DR debit memo, RE retuns etc.

Go to VOV8, select your sales document type and execute. There under the tab "Transaction flow", you can see a field "Screen sequence grp." which are all standard and you should not change this.

What i need is , where we create a new screen sequence group for ex AU , DR etc?.