Title says it all really - on one staff in 4/4 I want the upper voice beamed in the following groups:
Upper voice: one 8th + one 16th, three 16ths, three 16ths, three 16ths, two 16ths + one 8th
Lower voice: two dotted 8ths, two dotted 8ths, one quarter.
I can force the lower voice to behave the way I choose initially but then, on grouping the upper one the lower is always affected too (and vice versa). As a new user I’ve surely missed a command - something really simple like “select voice”. However, searching here has not immediately provided a solution.