In the In-Game Map Editor, some prefabs only provide one side, so if you want to release the prefabs on both sides, you can use the bar to scale it from 1 to -1.
For example:
Original:
later:

And if you only change the angle by 180 degrees, it will become like this:

Using coordinates can help you perfectly combine different prefabs.
for example:
Form a house that can be placed on the hills
House 2x1 Orange

• x:0
  
• y:50
  
• z:0

House No Interior Orange

• x:0
  
• y:45
  
• z:0

House No Interior Orange

• x:-8
  
• y:45
  
• z:0

Put the things you want to put together at x:0 z:0 and then copy the whole and move to the place you want. This way you can save the trouble of not being able to group objects together perfectly.

Use more than one texture to make the road or ground you draw more stereoscopic.
for example:
1.
The texture in the middle of this road is Sand (Beach)
and the texture of the recessed area is Gravel
2.
The texture of the airport runway on the way is a mixture of gravel and snow.

The setting of spawn points must be within the Protect range of the flag, but it can exceed the Capture Range and there is no height limit.
But these properties are directly tested by me, so if there is any mistake, please correct me.

You can use spawn points so that when you capture the flag, you will not be killed immediately by the newly born AI, and you can also create an airborne map.