Hi picturedrift,
Going by the other post of today, you create those on screen interfaces for visuals (for actors to “interpassively” work wit ) and not for a “power point” presentation. If so:
Here is an option that might give you easy control about it. I made a little screen capture, so you know what is important and useful, etc.
Scene file and screen capture
https://www.amazon.com/clouddrive/share/KddGcD6rWiKH7Jejplb6zaseqZTv8ufS7RR3zaPPG1T
If you delete or cut [knife m~k] points of the spline, except the start and end points, then you can adjust the amount and size to a certain degree! I have used a MG Selections to limit the parts, change that as you like.
All the best