You can personalize any channel in Tunify Blue by clicking on the wheel next to the channel. But attention: if you filter too much, the music you play may be less varied. So check which filter settings you have marked.
Extra tip: the filter settings shows a colored bar on top of the screen. . If it turns red, there are too few songs in your selection. (As shown in the picture below) You should then filter less strictly.
Available with Tunify Blue and Tunify Orange subscriptions.