1 line on Shared EDP w/ Upgrade Credit - how can I use it on Other lines for EVO?

[Q_Q]

1 line on EDP has Upgrade Credit - how can I use it on Other lines for EVO?

I have a 3 line EDP shared plan on Sprint.
All three lines are within contract & were renewed in the past year.
However, 1 of those lines still has a Handset Upgrade Credit of $150 unused when I renewed it.

Is there a way I can use that credit for a $199 EVO on one of the other 2 lines?
I don't want to activate the EVO on the 3rd line since my daughter has no need for an it.