Hello Julis - You can add as many reference line in Tableau.

Thanks,

Manideep

Hi Julius,

You need to add the 4 reference lines at every 20% the way shown above. You need to select the constant in the dropdown then you will be able to put the values as 0.2, 0.4, 0.6, 0.8

Thanks and Regards,

Ashish Chaudhari

Hi Julius,

We can use distribution and get ref line for each category based 20%.

Refer

Thanks

sankar