how to set pre-sets for sattelite radio

I installed a Sirius Radio kit from TSS Radio in my '06 Prius with the Nav package. No issues with the installation or function, other than the antenna doesn't work well sitting on the dash (looks like I will have to install it on the roof as recommended in the instructions). However, I can't figure out how to save favorite channels to my pre-sets. I get the weather channel screen and can choose among a variety of them, but how do I modify/save other channels? The owners manual does not address this of course, as the car came without sattelite radio.
Thanks!

 

Clearly clueless here- to set presets, I have to tune to the channel I want, push the "Text" button which takes me to the screen that originally showed the 6 weather channels, and push and hold one of the six buttons. That then becomes the preset for the channel I selected. To select another channel to listen to from my presets, I have to push the Text button, which returns me to the six channel selection screen and the push the channel I want once. If I push it too long, it then becomes a preset. Thanks for you interest- Love the site and all the information!