Hi @SMillsYS3X2. As far as I know, there is only one option for including an 'Apply' button in an iLogic Form, and that is through the property named 'Predefined Buttons', which is only available while you have the top most node in the form editor selected (the node representing the whole form & its title). That property has a drop-down list, with one of the values being 'OK Cancel Apply'. When using that option, changes made within the form will only be 'sent' to the Document when you click either the Apply button, or the OK button. When you only have the 'Done' button, then changes made within the form immediately effect the Document. And as far as I know, we do not have any control over how those buttons function. However, we can include other iLogic rules in our iLogic Form, which will show-up as a button in your Form. When you do that, there is usually a property named 'On Click Action' for that 'rule button' where we can set the what all else we want to happen besides just running the rule, that we want to happen when we click that rule button. However, if going that route, an iLogic rule will not know about any 'modified / changed' values in that Form, if they have not yet been 'sent' to the Document. We simply do not have much access to iLogic Forms from iLogic rules, other than showing them, closing them, and possibly getting a notification about the Form closing, and why it closed, if it was shown by that same rule.
Wesley Crihfield

(Not an Autodesk Employee)