Are there any general guidelines (not hard rules), on how long you should sit vs. stand at an adjustable desk? Especially as you begin to adjust to one. This is in part following up on the answer to Should I get rid of my office chair?. I can see how it will be vary based on personal fitness and situation.
Also, are there any recommendations on foot position and stance while standing? I'm very new to sit-stand desks, and so far I've taken to a squat stance. Part of my issue has been hip mobility and pelvic tilt "butt wink" when performing barbell squats in the gym.