Within the Ammo section of the app (manual insert information) I'm trying to insert the BC of the bullet I want to use and because I can't find where to insert this information the app won't let me save the ammo data. I have been looking at Brian's video on YouTube, he is using an Android phone and on that platform there is a BC+ button visible, this green button isn't present on the iPad version? Help would be greatly appreciated in informing me how to insert the BC figure into the app.