Depending on the system type you can chance the values. See parameters tot_magnetization, starting_magnetization(i), i=1,ntyp. However, it should be two/three different input files. Also have a look at this answer in research gate

https://www.researchgate.net/post/Quantum_Espresso_users_Do_you_know_how_to_enforce_triplet_multiplicity_in_a_PWscf_calculation. 

Thank you