For exercises that include a jump or if you wish to measure power at weight it is important that you have an acurate measure of body mass
Body mass is recorded in the Anthrop section along with skinfolds.
At the squad level you can easily record the whole teams weights in one go.
At the athlete level you can review your athletes body weight history over time.
To change your account from kg to lb go to settings > general. This will change for all your body weights and lift weights.
Select Mass Units and change to lb
Finally select save.