Hi,
I am not sure I understand you issue well.
Let me show what I usually do.
1) Open project from examples created by RTD
lama_0-1685551933632.png
2) I select for example
lama_1-1685551933637.png
3) Now I can work with it
lama_2-1685551933646.png
4) I can play with it and then I can decide to save and close it
So right mouse button at project and select close.
lama_3-1685551933651.png
5) Now the project is closed
lama_4-1685551933654.png
6) When I want to open it again then I press right button at the project name, se;ect open project and I can work with it again
lama_5-1685551933659.png
7) Of course you use some work space where your project are created from examples. This is mine....
lama_6-1685551933662.png
Best regards,
Ladislav