I'm in the same boat. I have my "lifestyle" set as seated, some movement. Then I add work to the activity log-"Light/moderate work while standing". It seems to be working well, makes my work days burn about 800 more calories than my home days. It also lets me adjust for how busy I was at work, if it was slow and I spent an hour or two doing computer work instead of standing, I can adjust for that. I also log my sleep because that varies from day to day too.
If I keep starting over, eventually it will stick, right?
Current weight: 140
Goal weight: 135