1/8 tied to dotted half

How do I get this to be an 1/8 tied to a dotted half.

Try using Force Duration for the dotted half.

With these options it’s what I get:

(But maybe they won’t suit you for other sections?)

If you need to do this regularly: use the appropriate settings (others can probably explain this better than I can > for example: charles_piano, who was faster​:wink:).
If you only need to do this once (or rarely): use ‘Force Duration’ and enter the value exactly as shown.