Display more channels than 4 in DSM mode

In my 7e transmitter, when it switches to DSM protocol, LCD only displays 4 channel instead of 6 or 7. When it switches back to 2404 mode (4 channels only), LCD displays 7 channels. How can I see more channel when transmitter is in DSMx or DSM2 mode ?

Thanks.

By putting mixers on them. Since 5.0 displays virtual channels, it now only displays channels with mixers, as the old behavior of displaying all channels makes the channel display page to unwieldy. So the model.ini in 2404 mode probably has 4 output channels and 2 or 3 virtual mixers in use. Default templates for all models only have 4 channels, so that's all you'll see.