No, you only need 1 constant fuse and 1 switched fuse. You just pop in the "add a circuit" and tie in all your gauges constant lines to the constant fuse. And tie in all the gauges switched lines to the switched fuse.
Basically you run one line from the switched fuse and one line from the constant fuse. Run those lines to your "a" pillar. Then tie all your lines together there.