MicroPayments Group Actions Add-on for WordPress

Yes, negative values can be applied to groups on a chosen interval. This can be a means by which you charge users for a service such as a subscription or a tax on points for a game.

To learn more about this feature see this Help article.

Yes. You can set what label is applied when users are charged via the group actions add-on through the configuration settings (CM Micropayment Platform → Settings → Group Operations).

There is no upper limit to the number of group actions sets that you can create, it is only limited by the number of groups or user roles that you have on your site.

The “groups” we refer to are User Roles on the site. You can choose a user role to apply the group actions to or you can choose to apply them to All User Roles.

Yes you can.

First you need to create a User Group set selecting the user role for the set.

Then set the interval (how often to apply points) and the amount (the number of points to award / charge).

You should also double check that Periodic Group Based Operations are enabled.