"cashing in" in the middle of the attack phase.

hello,
what are the rules for cashing in whilst being in the attack phase of my turn.
when i eliminate the last territory of an opponent, i get his cards. when my combined cards is over 5 it automatically lets me cash some in.
What if they are not over 5 cards, but i can still cash some of them in to be used while still being in the attack phase?
Is that possible to do? If so how?
Fast help will be much appreciated, since I am now in the middle of my turn.
Cheers!
(I also asked this in the Q&A forum. I just thought it wasn't getting much exposure there, and I'm in a rush for a reply. Sorry for the dup. Please forgive me.)
what are the rules for cashing in whilst being in the attack phase of my turn.
when i eliminate the last territory of an opponent, i get his cards. when my combined cards is over 5 it automatically lets me cash some in.
What if they are not over 5 cards, but i can still cash some of them in to be used while still being in the attack phase?
Is that possible to do? If so how?
Fast help will be much appreciated, since I am now in the middle of my turn.
Cheers!
(I also asked this in the Q&A forum. I just thought it wasn't getting much exposure there, and I'm in a rush for a reply. Sorry for the dup. Please forgive me.)