After members signing in to the website, they can see the "Add to my favorite" function. It¡¦s for the members to keep a record of the products they like. So the next time when they visit, they don¡¦t need to make any efforts to search. 

Only KM-Master and Fancy Shop have got this function
1. Please set "Add to my favorite" as "Yes"
 
2. You can find "Add to my favorite" at the bottom under products details.