[dukiebluedoc]

I am finding GB a very valuable tool to track bg's,meds,wt and bp.
Today I tried adding an activity log for the one hour walk I took after breakfast but when I went to the activity,entered it, selected a time and "after breakfast" then tried to save the log, I got a message saying there was "nothing to save".
Do I need a blood glucose entry associated with each activity or am I just doing something else wrong.?

Somewhat related question--can I do the bg entry,meds and activity all in the same log if they are all at the same time or do I need a separate log for bg,another log for meds and another for activities?
Sorry for all the noob questions but I want to maximize my use of this app--it is great for analysis and motivation. I did check the FAQ and found nothing related to above questions.
BTW I am a retired primary care internist with pre-diabetes (IFG) using GB as an aid to holding off transition to full blown DM.
TIA for any help with above
Caroline