At the beginning of the year, I asked my Webelos scouts which ones cared about rank advancement and which ones just wanted to have fun. The ones that cared about rank advancement, I made sure we got through the rank advancement, tracked what they did, how they progressed, and made sure we had opportunities to get fun stuff in too. The Webelos that just wanted to have fun, I didn't worry if they missed a meeting or didn't work on anything at home. If it's not important to them, than it's not that important to me.
We had crossover at the beginning of the month; the ones that wanted the Arrow of Light found a way to get it all done. The others didn't come to the ceremony because it wasn't important to them. We had fun regardless.