Graph shows lines in parallel

Hello,

Can you please explain how to set a graph to allow parallel presentation of chosen lines
as shown in sec 0:23-0:24 in the following movie. Two lines out of three are presented

image

Instead of the option to present each line separately or all together. no other combination
https://play.grafana.org/d/000000002/influxdb-templated?orgId=1

Thank you very much
ST

Create a variable, use variable in query. In panel general options specify variable as a repeting by