New Catering Calculator, Buns question, and side serving

I have been using SoEzzy's catering calculator for some time. I find it pretty easy to understand. However, I would like to make changes to the sides and such. Is there a way to do that? OR does anyone have something better that they like using that they wouldn't mind sharing?

When dropping off or providing onsite cooking, we have been buying standard size hamburger buns from Gordon foods. I have toy'd with the idea of providing slider buns in side to help control portions. Anyone done this? Can anyone share advice?

Lastly, we catered a wedding 2 weeks ago. It pretty much went off without a hitch, with one exception. This is the first time that I have witnessed the older crowd stocking up on sides to the point where the last table released still got some, but we ran out. Is there a serving utensil suggestion?

Thanks for your response.

Is it possible? Absolutely unfortunately. My partner quoted the price. He forgot that we had made an agreement that any party over 100 people gets quoted a per person price. He quoted a per pan price.

example: pulled pork for 140, chicken for 120, and sides for 100. The groom thought the sides wouldn't go as fast.

We didn't have control over the plates. They were nice ceramic plates provided by the venue. Bottom line is we planned for what the groom ordered, but probably should have planned for 15-20% more just in case.

Lesson learned. I think.