I was attempting to adjust the window positions with the two bolts that are accessed from the bottom of the door. One of them broke and I was hoping someone might have some insight on how to replace this part?

Thanks in advance!

 

I'm guessing you're going to need to remove both the outer and inner door panels to see what you're doing. Find the door panel removal DIY. First time it will take you 30 minutes. I've done it enough times now that it's about 10, and that includes gathering the tools. Have some of the correct door panel clips on hand for reassembly as usually one or two break during removal.