If you ask me, every tool that requires a tool to adjust it should have a place on the tool to hold the tool. Some Ryobi tools have this feature, but the Multi-tool (brushed -- the brushless may be different) does not.

Three 6mm x 2mm magnets are needed to hold the allen wrench into this holder. Very likely it will just fall out without them.

You can see from the photo how it is hot-melt-glued to the base of the tool, just above the battery. It's never proven to be in the way, so I'm happy with it.