How do you move notes horizontally when there are three voices in a staff?

Hello advanced users,

How do you move notes horizontally in Engrave mode when there are three independent voices in a staff?
Before I got the following result, the third crotchet notes were fine, but the first two minim notes could not be placed separately.

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Engrave mode >select the note >properties panel : change the voice column index

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Thank you very much!