when can you use a jumperoo?

A&B September 17

LO is SO active and just wants to be sitting or standing all the time!  I tried finding the age recommendation for a jumperoo online but not having a lot of luck.  It's in the back of our closet behind LOTS of stuff.  I'm hoping someone can tell me when I can use it b/c I'm too lazy to dig it out if it's too soon to use it