How do I place characters in the correct Z order?

Some of the characters needs to be positioned in front of others while in-game. If one actor steps in front of the other for example. Top-down view game. Slightly angled.

Any help much apprechiated!

You can use Object (the character you want to move) --> add action --> Z Order. You'll have 4 choices.
Cheers

Yes, those options have been overlooked. Are these the only alternatives? Objects will have to be placed in front of others only when their image point is lower on the Y axis. So in logic, the more Y the more Z. How can I implement this?

Thanks for answering.

In the Official Z order method (without a plugin).

Loop trough all objects, set an instance variable to there y.
Use that instance variable in the System > Z order.

With plugin.

Try this. http://c2rexplugins.weebly.com/rex_zsorter.html
It works flawless.

Thank you.