How to Create Specific Settings for a Particular Window

Within the Configuration Module

Open the desired window and leave it visible on the desktop
Run the Configuration Module
Select the "Windows -> Add Window Rule" command in the main menu to add a new specific rule (or click the similar toolbar button, or press the Ctrl+A hotkey)
Open the Target Window Pane of this new rule
Use either the Window Finder or Window Selector to accurately fill Target Window options
Change the default Window Rule <n> name to something reasonable
Adjust window rule properties as required
Select the "File -> Save" command in the main menu to apply the created rule (or click the similar toolbar button, or press the Ctrl+S hotkey)

Note Make sure that the Via "spanner" title button option is enabled.

Open the desired window and leave it visible on the desktop
Click the title button in desired window's title bar and select the "Create new specific settings" command in the appeared menu
Adjust window rule properties as required
Select the "File -> Save" command in the main menu to apply the created rule (or click the similar toolbar button, or press the Ctrl+S hotkey)

Open the desired window and leave it visible on the desktop
Right-click desired window's title bar to call its system window menu
In the appeared menu select the "Actual Window Manager -> Create new specific settings" command
Adjust window rule properties as required
Select the "File -> Save" command in the main menu to apply the created rule (or click the similar toolbar button, or press the Ctrl+S hotkey)