All of our matches at the Grandview Firearms Training Center are indoors. We have 8 lanes (all in one big bay) with a 50' lane lenght. (We can move back another 10' for the classifier, shooting from behind the line.)
I've got bunches and bunches of courses of fire already developed that fit in our small bay, and I'd be happy to share them with you. My COFs were developed in Excel, which has some very powerful graphic capabilities. If you don't have Excel, I can convert some of them to Word. That will take longer.
We even have movers, using target movers to pull them. (We even set up a pulley across the back of the range, with two targets hanging. The center of the IDPA target is removed, and ballons put in the 9" centers. We use a target puller as the "motor" to move the targets, with strong fishing line tied to the target. The puller moves back, and through a pulley, the target moves across. You've got about 2.5 - 3.00 seconds to pop the balloons, and its a challenge for even the best (nationally ranked) shooters to hit comfortably -- cause we put no shoots out in the middle.
We bought a BUNCH of very inexpensive plastic tarps ($2 each), hang them from the wires used to move the targets. Using shower curtain hangers, we can create lanes, or walls. We have a couple of free-standing barriers. These allow us to fabricate many different layouts.
On simple courses of fire, we can set up two at a time. Let one shooter shoot, then the other, and then score both at the same time. This speeds things a bit.
The biggest time impediment we've found -- and we never have enough people running the match to master the problem -- is getting the next shooters ready and on line so that we can shoot without delays. We have a small club, so its not an overwhelming problem. But when we have visitors, our lack of "professionalism" is kind of embarassing.
The big problem, indoors, is to limit movement so that non-shooters are not at risk. So we move forward and laterally at an angle, and move back... but put a lot of emphasis on shooting from cover.
Contact me by email... I hope you have Excel or have a friend who has it.