How can I change template within a music sheet?

I have a "hand made" music sheet for choire and I'd like to make a digital one. There are two parts of the score. The first one made for 4 parts (Soprano, Alto, Tenor, Bass), the second part made for all (single part). I do not know how can I change template inside the score! Is it possible at all in the MuseScore (v.3.0.1)? Could anybody help me? Thank you in advance!