Hi Veera,
we can create a Broker Document Type in designer in the similar way that of creating in Developer,
Go to the Package Navigator → in the Menu ->—>New—>Document Type—>
In the Properties Tab → Publication → set Publishable properties as true and save.
At present we are using the Designer version 8.2 .
I hope it answers your query , if any queries reply back.
Thanks,
Anand
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