One button to modify several attributes?

I was looking to implement a simple button that will reduce multiple other attributes by 1 point.  Is this possible?  I've been unable to find any information on how one might go about it.

Yes, you can do this with creating an action button, that when pressed, triggers a sheetworker that does the changes.

<button type="action" name="act_reduce">

The type="action" version of the button on roll20 isn't that well known or documented, but there is a example of how action buttons can be used for swapping between pages that should help somewhat.
I haven't made any sheets with an action button to change stats, nor had the time so far to track down examples of sheets that uses them.
Edit: Typo fixed, thanks GiGs!

Just a quick typo correction (quote in the wrong place)

<button type="action" name="act_reduce">

Lets's say you created an action button like the above, named reduce, here's an example worker that reduces a bunch of defined attributes by 1 each, when the button is clicked.

on('clicked:reduce', function() {
    // make an array of the attributes you plan to adjust, for ease of use later
    const attributes = ['list of attributes to adjust'];
    getAttrs(attributes, function(values) {
        const settings = {}; // make a variable to hold the changed attributes
        // loop through the attributes, get the value, then subtract 1
        attributes.forEach(att => {  // in each go through the loop, "att" becomes the next attribute
            let tempattribute = +values.att || 0;
            tempattribute -= 1;
            // store the changed attribute in the settings variable:
            settings[att] = tempattribute;
        }):
        // save the updated attributes to the sheet
        setAttrs(settings);
   });
});

I created a wiki page for the different types of uses for <button> in chracter sheet creation, and included the above example.

Nice! I noticed a small syntax error in the code above and fixed it here and on the wiki.

I should mention I used simplified code in that example for instructional purposes. But it might still be a bit heavy for a more general instructional example.

I added a simpler example of adding 1 to a single attribute, as a better instruction to newbies.

GiGs said:

I added a simpler example of adding 1 to a single attribute, as a better instruction to newbies.

Thanks!

I also made some improvements to the Building Char Sheets article, and added a link to the Button page in the relevant place.
Now a few things there should be worded a bit more clearly than before.

Wow thanks for the excellent help everyone!  I don't know how I overlooked it in the wiki, but I am definitely going to be utilizing it.  Very very appreciated.