Notes in different clefs

Hi,

Could anyone please advise me on how to correctly enter into Musescore the measure in the attached JPG.

If I try to use "Cross-staff notation" it moves the entire chord to the treble clef, rather than just the two notes I want to move.

On the other hand, if I try to enter the bass clef part as a separate voice, I'm unable to place those two notes anywhere except as the first notes in the treble clef.

I've already read the "Voices" page in the handbook but still do not know how to enter this measure.

Thanks for any help.