I will try to help you over the w.e but I need to know if your make/model is something with which I am familiar. And can you please clarify the exact question? I will check in a couple hour as I am traveling.
Are you trying to have all of these charges total up when you press one preset key, or several keys? with a little patience, I can help you as I am very familiar with the 5115. I just need to know what you are trying to accomplish. Are you in the US?
I must crash now as I have had a long day, can we continue in the AM, say nine hours from now? Please let me know as I am sure I can help you.