Hello there,

Once you setup an ideabook with your pictures inside. You can go to the ideabook in question while logged in to Houzz, and you should see a "Collaborate" button available towards the top middle of your Houzz screen. Click on "Collaborate" and share it with the users/professionals in question.

Once you share your ideabook with them, it should show up under their profile for them to view and comment on.

Hope this helps,

-Peter

Spot on. Thank you.