Bulk update status for vendor on frontend

Hi,

There is no bulk feature for that and that's not something that I can recommend.
Each time a vendor sale is updated, there are some result actions.
- The main order can be updated too
- The admin can be notified by email
- The vendor can be notified by email
- The customer can be notified by email
- Plugins can execute actions thanks to the trigger.

To do these action, it requires some time and you also have to deal with the server timeout.
That's why doing a bulk to update a several orders in the same time is "risky" and should be done with some knowledge of it and of the system (server).

You can see to integrate such feature using a custom plugin and some view override, but you need to be sure that it won't have side effects and that the process won't be stop suddenly (otherwise some order could be partially updated or some mail not send, etc).

Regards,