I created a Bumblelion Race just cause it sounded like a kool thing to try and play.  I based it on the monster Bumblelion.  I would like it to have 6 limbs.  2 sets of "arms" and 1 set of "legs" (as it walks upright).  How and where would I add the extra set of arms.  I'd like for it to be able to wield weapons with all 4 hands. (like "two handed weapon")  Or have multiple attacks with it's 4 "front" claws.  I just can't figure out how to get a second set of appendages.  Any help would be greatly appreciated.

Thri-kreen is an official race that has 4 arms. Here's how they handle it:

Secondary Arms

You have two slightly smaller secondary arms below your primary pair of arms. The secondary arms can manipulate an object, open or close a door or container, pick up or set down a Tiny object, or wield a weapon that has the light property.

Anything more than that, like giving extra attacks, would probably be overpowered.

I'd really like them to be fully functional.  Maybe I could figure out a way to have the extra arms have a disadvantage.  But I can't figure out how to add a second set of arms.  I started the race as a "mutation"of the Leonid race.  I've looked through the insect races but can't figure out where to add the extra set of arms in the racial abilities.  I can deal with them being over powerful once I get them added .  LOL 

Just add a feature that says "you have extra arms" or something, like the thri-kreen feature I just pointed out.