Stand back, you're about to be confused. Yes you can have banks and channels, but it depends on the radio format as to how it's laid out. Read the radio and then click on "model". See if your radio format is trunking or conventional.
For conventional, the banks are called groups and the channels are called, well, channels. You can put channels in one group, click on group up, and start a new bank with more channels. You would then program the rotary knob for channel select and a couple of buttons for group up/down.
If the radio is set as trunking format, then the banks are called systems and the channels are called groups. You would set up a number of "systems" (either trunked or conventional) and the add the groups (channels) to each system. Then program the rotary knob for group up/down and a couple of buttons for system up and system down.
If your model format is set as trunking and you don't have any LTR systems to put into the radio, I would suggest you change it to conventional to make things simpler for you. Be advised though, changing format will erase all the data and you will hve to start from scratch. You always save an archive before you make any radical changes, right?