Breakout Boards are a convenient, re-usable solution for wiring multiple igniters to a single cue.
If you are using Clip-On Igniters, you can plug up to two igniters into the breakout board.
If you are using Fuse-Tube Igniters, you can plug up to five igniters into the breakout board, or use multiple breakout boards together for a maximum of 10 Fuse-Tube Igniters per cue.