After you following the steps of launching codewalker and setting up your initial few settings there is a few things you need to understand
The ymaps your showed me are vanilla .ymaps, you should never add your own work into it, you should always make your own separate ymap.
For the vanilla ymaps you only need to alter them if you are going to be editing the area you are putting your ymap.
If you aren’t editing the world area all you need to do is
Open codewalker
Set up your settings as described in my first guide
Press control + N
Click file
New ymap
The ymap will appear on the left as map.ymap or map1.ymap
Click on it on the left hand side
Then on the right hand side you will see where to name your ymap.
Add a name
Click on your ymap on the left hand side make sure it’s highlighted
Press the save icon and save it to where u want
Then hit ymap / new entity
Add your props to this ymap
Generate manifest
Save