Hi @Lynn_Newton, a custom vertical line would give what you describe:
here an example with two different customised lines: one with a hook down, and one with a hook up and down. You can also hide the hooks and leave only the symbol, setting the properties appropriately:
Usage and result:
Workflow (2 different lines creation):
1.
2.
Dorico file example:
harp damp vertical line.dorico (1.3 MB)