For your immediate problem perhaps a mini cheat might work for you.
Revit curtain wall door handle not there.
Instead select the modify tool and position the cursor over the edge of the curtain wall panel that will be replaced by the door.
In part 8 of the tutorial you place a curtain wall at the store entry.
Modify the grid pattern of a curtain wall.
Add embedded curtain walls.
Also when the cursor is over the curtain wall in the canvas you are not able to place a door.
Generally our curtain wall doors have a companion regular door not by design but rather by accident as we keep making families.
Press tab until the panel highlights and then click to select it and display the pin icon.
Press tab until the panel is highlighted and then click to select the panel.
When performing the procedures you may notice minor differences in functionality and user interface.
I could indulge in a rant about all the problems with revit legends.
Add a curtain wall at the entry.
I would like to ask on why i can t see my door handle of my curtain wall door when i place it on my curtain wall.
Also when the cursor is over the curtain wall in the canvas you are not able to place a door.
This video was recorded using revit lt 2020.
Click the pin icon to unpin the panel.
Instead select the modify tool and position the cursor over the edge of the curtain wall panel that will be replaced by the door.
Press tab until the panel is highlighted and then click to select the panel.
Place doors in the curtain wall.
I am using the default curtain wall door that came with revit and not customized.
In the type selector select a curtain wall door to replace the panel.
This video demonstrates the following.