How to make hero learn abilities only at higher levels?

I have heroes with 50 levels. they have an ultimate with 5 levels, 3 abilities with 10 lvls each, and bonus attribute with 10 levels. How can I force it so the player has to pick abilities spread out? Like.. I dont want the player to be able to level any of those abilities to 5-6 befoer he hits level 10-20. Want to do the same for the ultimate. I know I can change in object editor the required level, but it still allows me to pick the abilities in no particular order. Any ideas?

-Huh

You could always force them to learn it through triggers. Therefore they never have any points to put in, or they get a point every couple of lvl they can use because you use most for them.

Hero - Learn skill for (Leveling Unit): Human Archmage - Blizzard

[edit] sure you could increase the level skip (i almost mentioned it) its just about mow much control you want over their skills.

have you tried to use a higher level skip requirement?

Lord Vexorian is right. Level skip will do it, you don't even need triggers.

Hmm Level skip, i never noticed that before. Awesome thanks Vex. That should do the trick :)

-Huh