Garage Band for IOS

Hello, I am trying to make a song in Garage Band for IOS. I want to use Loops. Now, I got my drum track and My electric piano track. When I go to play what I have been working on, I hear my drum track and I also hear my piano track. But, When I hear the piano track, I only plays for 1 bar and The drum loop keeps on playing. Note: I just want to make a song out of loops. So, Can someone please tell me how to lengthen all of the instrument track in my song? Thanks.

Forum: 

#1 Extending sections.

I don't know how to work with loops yet. However, I know how to change the length of apart.
Swipe across the top bar past Settings till you get to song sections. You probably have just one section so you can just tap on it and change the length of the section or if you have more than one section you will have to Tap info. Choose auto to record any length.