select only one channel if there are multiple channels

Anyway, you can check out my email on youtube and create very youtube channels, for example channel 1 channel number: bailarinasexoticas with channel id: asdfrty456, channel 2 channel number: musicarelajante with channel id: fghtedfrr7856 and last one. channel 3 channel number: relajacionespiritual with channel id: gfdjrtyu789 . The duda is that you can select the channel you want to advertise on channel 1 and you can choose to advertise it on channel 3 and you can select the channel you want to advertise on the channel you want to advertise for free