Although I do have a mixer with plenty of outs, this can be accomplished in a few different ways.

We use a patchbay at the studio, makes things handy.
Or you can connect mics to channel 1 & 2 on the 1010lt, and use the outs from your guitar/keyboard/bass amps for the other inputs.
If you need more than two mics, then, yeah, you'd need something to handle that stage.

I was lucky and found an MX 3282a before they were discontinued; 8 AUX outs and 8 subgroup outs. Lots of flexibility for large gatherings. It has held up well with all the moving around it gets. I'd buy a used one if I found it! (gotta have some room available though, it's about 45" long ang 30" wide..)
Only link I could find -
http://pro-audio.musiciansfriend.com/product/Behringer-MX3282A-Eurodesk?sku=631211


I do not work here, but the benefits are still awesome
Make your sound your own!