No reverb on one channel strip

Kinda strange, and I’m not sure what’s going on. I’m just learning my new SQ6 and playing with stuff. I patched an ‘MC’ mic through the stage box to channel 24 on strip 23. Learning how to use the FX, and I can’t get reverb on that channel. I tried different I/Os, no luck. Moving the mic to any other fader seems to work fine. What am I missing?

Check that the FX send on that channel is turned on / assigned.

It took a while to find it. In the routing page, the fx send indicators were empty boxes instead of filled in. Then found them turned off on the assignment section. Fixed! I guess with great flexibility comes great confusion sometimes. Thanks!