50g question: How to lock in PROOT sub-menu?

[lemontea]

Hi folks,

On the 48G series, you can have the PROOT softkey show on screen, instead of having to go to the solver application. Then you can just solve the function if you enter the coefficients [a b c d...] and hit the PROOT key.

On the 50g how do you do that?

I have only managed to hit RIGHT SHIFT + 7 to get to the softkey menu, and if I press the POLY menu, I get the selection box (PROOT is #1) and need to select the command before it will execute.

Thanks.