Daniel,
No, there currently isn't a way to add custom railings to that dialog. You could edit the created post blocks in the drawing, but it sounds like you need more types than are in there.

Do you have a screenshot or drawing example of all the different linetype variations that you're currently using?

-Amanda

Would love to see more options for line types in the walls and railings...

Bob,
Do you have a screenshot of style examples you'd like to see in there? We have ideas but it's good to see exactly what you're wanting to use.

-Amanda

I would love a way to show a guardrail over retaining, two or three retaining wall symbols (hatched or cross hatched, varied stripes), existing walls on a grayscale, letters are available "G" for gas, "W" for water, "SS" for storm sewer, "E' for electrical etc, these could be placed here since it is lines and linework, select the line and then type your letter and description. a line with small "X" for fencing, other small symbols, triangles, etc. The LandFX community will find ways to use the symbols and linework, maybe it needs separate sections for Utilities and Wall and Fence,

Wall Steps would be helpful as well maybe linked with the grading tool to show elevations and step locations.
Just Thoughts
Bob

I could definitely use a rail over wall options.

Clay,

These are nice styles. We have a long-delayed project to freshen the Railing tool, but it is currently on the calendar for next year. I'll add these to the list.

--J

Jeremiah Farmer Did this refresh ever happen?

A new wish would be the wall options would be closed polyline outlines. The walls often look off with the open ends.

Clay,

We have not yet gotten to the Railing overhaul. It will have a renewed dialog box, more customization, integration with RefNotes, and support for closed polylines.
Although now looking like it might push all the way into next year, but we’ll see. Goal is to still get it done this year.

—J