Permanent Adjustments: At-Will Powers

[sleepyspoonie]

Hello! My DM has a decently homebrewed version of 4E running right now, and I've been toiling in the editor to add the changes into Hero Lab for myself and the rest of my party. So far, I haven't had much trouble, but I've hit a stumbling block now.

One of the things my DM homebrewed in was the ability to spend experience points to purchase certain class powers. Adding and subtracting XP is nothing, but I'd like to add to the number of at-will powers all classes have access to. To simulate this, I was hoping to create a custom Permanent Adjustment where you could add to the number of At-Will powers that you're allowed to have at any given time.

I'm not entirely sure where to begin with this one, if this is the best way to go about it, or if it's even feasible. If anyone could give me a hand, it'd be massively appreciated. (And sorry in advance if this isn't the best place for such a question!)