Is it possible to set default positions for specific apps?

[MikaelRothig]

Hello, I'm quite new to yabai. I'd like to set default positions for my regularly used apps across my 3 displays.
Is this possible?

[koekeishiya]

Only for floating windows; use window rules: https://github.com/koekeishiya/yabai/blob/master/doc/yabai.asciidoc#rule

# Treat all safari windows as floating,
# move them to display with arrangement index 2, 
# and fill left-half of the screen

yabai -m rule --add app="^Safari$" display=2 grid=1:2:0:0:1:1 manage=off

[hamadahiro]

Can it remain managed, but change the proportion between windows within a space? For example, I want one app to always opens in first 2/3 of the screen on the left, and another in 1/3 on the right. I know I can achieve this with manage=off setting, but I'd prefer to still keep them managed, just change the default size.

[koekeishiya]

You can play around with window --ratio .., or globally by changing config split_ratio.

e.g:

1. open Finder window.
2. open Terminal window.
3. yabai -m window --ratio abs:0.67

[hamadahiro]

I want just one app to be 1/3 of the screen. No matter what other apps are in that space, I want this app to open at 1/3 of the screen and all others should adjust accordingly. Is that possible?

[MrNeth]

Did you ever find a way to do this with a specific app? @hamadahiro

[hamadahiro]

Nope

[Bellavene]

Another soul wants master layout