Show only the most popular products & Others on the legend of the chart

[marijane]

Hi, I have a chart that has too many products on the legend so I wanted to show only the products with the most sales and the rest named "others". Do you know how can achieve this? 
I build a table with product and sales and create this measure but I know that is wrong because the TOPN is a table and not a column but I don't know how to fix it. Can you please help?

Product & Others = if.eager('Product & Others'[product] in {TOPN( 6,Product & Others'[product]

        ,[sales],DESC)},

        ''Product & Others'[product],"Others")

Product & Others: 

product	sales
A	100
B	200
C	400
D	50
E	74
F	300
G	56
H	53
I	21
J	80
K	150

[amitchandak]

@marijane , refer topn with others

Power BI- TOPN with Others- https://youtu.be/I_TY4hVlzAE