How to quick bake many objects?

Hi
I use this procedural wood.
Procedural Wood Collection for Rhino | Food4Rhino

However they will not work with vray renderer.
I need to bake into texture map then make material for it.
I use command Bake, they only can select single object each time.
For example, a table will have table top, 4 legs. It will cost a lot of time if I do each of them.
Are there any way to quick bake multi objects?

Thank
Travis

Many ways, if you want to bake on different layers i highly suggest Elefront plugin, bake and remove old if required.