No problem!

I don't have access to my book at the moment, but the sidebar I am thinking of is in the warlock class, near the Pact of the Blade option. It describes how you can use a magical weapon as your pact weapon, and shunt it away into an extra dimensional space when you aren't using it. Just replace all references to "pact blade" with "solar weapon or lunar shield".

Let me if that clears it up, or if you have more questions.