Can I pay more than my scheduled monthly Verizon Edge installment?

No, unless you are either seeking to Edge Up to a new device, which requires that at the time of the Edge Up transaction you pay at least 60% of the device (50% for customers with an Edge Agreement entered prior to 6/1/14) following the initial 30 days of the Verizon Edge Agreement; or you are seeking to pay off 100% of your Verizon Edge Agreement, which you may do at any time.

Thanks for the quick response. I was trying to find an option to make a payment to lower the monthly edge cost, but could only find information regarding the Edge Up option.

Do you have to go into the store or call CS to do so or is there an option to pay the full amount online? Core2

I would think customer support should be able to handle it - 800-922-0204

It states you can make a larger down payment when you start the plan, but just can't make 'extra' payments.  As far as I know, it's all interest free, so not that big of a deal unless you have some cash burning a hole in the pocket.

Personally, I am looking at the 10GB plan to get $25 off per line.  With my work discount off the Data, it looks to be a good deal to me.