I know that if you want to make a SIMILE part, you can put (as my picture) quarter notes, then convert (in Sibelius) to SLASH NOTATION and enter the text that says SIMILE.
The point is that in the picture above when you have 4 quarter notes in the previous bar, you can convert to slash notation simply like that, but what happens if in the previous bar you have eighth or sixteenth notes? How do you interpret slashes for a SIMILE with eighth or sixteenth notes?
For example, if 4 slashes represent 4 quarter notes, then should 8 eighth notes be 8 slashes, and 16 sixteenth notes be 16 slashes?