Why edem can't set up two different types of particles?

Dear Altair teams,

I had confusions about the modeling of particles with the edem software.There were two different types of particles that i wanted to set up. One is the cylinder-like particle,i want to make it with the single sphere, the other is the thin-stick-like,i want to set up with the spherocylinder.But edem doesn't seem to support this modeling method during the modeling process.The warining was that there was two different types of particles?Is there a good way to solve this problem?

thanks in advance

chao