Edit half-dashed slurs?

Hi, Can I edit where to start dashed part in the half-dashed slurs?

It is literally half now…

Well (something) can be done in Engrave…
slur
…or using two slurs…

Unfortunately there is not currently any way to decide where the dashes start. I’m hoping they will add either a special handle or some engraving mode value in the future to allow you to specify how much of the slur gets dashed.