If you're playing a layout that is already in UDisc, but you'd like to play with a different set of pars than what is listed in the app, then just select the layout and create your scorecard as you normally would.
Once you're in the scorecard, you can swipe over to any hole(s) for which you'll need to change the par, and then tap on PAR in the upper-right. You can adjust the par directly within the scorecard, and then when you arrive at that hole, UDisc will remember which par you're playing.
Note: to prevent clutter due to duplicate layouts in the app, we would ask that you please do not submit "Pro Par", "Course Par", or "Amateur Par" layouts that are the same combination of pins and tee pads as another layout in UDisc. Feel free to reach out to us at help@udisc.com if you have any questions!
If you are a course ambassador, and you wish to fix the pars on a layout, please check out this dedicated article.
For more tips from your fellow disc golfers, check out the UDisc Forum here: Landing Zone.