Local Booking Manager allows you to enter specific tags for reservations and use them to tag reservations if required.
Visit web page https://htmlcolorcodes.com/ to choose in which color you would like agents to see extra yacht info, example code for red is #ff0000.
Open Work >Yachts, go next to field Year of built and enter HTML color code ( 1.) press Apply ( 2.) to complete adding the tag.
In the offer for agents, it will look like this (3.)