I have the following triggers under "Normal mouse", but I'm actually using the Macbook touchpad - I think it was something related with the "Leftclick" and because of this it needs to be under "Normal mouse"
[
{
"BTTLastUpdatedAt" : 1753474123.938906,
"BTTTriggerType" : 1000,
"BTTTriggerTypeDescriptionReadOnly" : "Leftclick (needs modifier key)",
"BTTTriggerTypeDescription" : "Start Resize with leftclick, shift and option, works together with below trigger",
"BTTTriggerClass" : "BTTTriggerTypeNormalMouse",
"BTTUUID" : "A94520F2-7284-422D-B17C-AAA3AE8E9778",
"BTTNotesInsteadOfDescription" : 1,
"BTTRequiredModifierKeys" : 655360,
"BTTOrder" : 2,
"BTTActionsToExecute" : [
{
"BTTLastUpdatedAt" : 1743663212.441272,
"BTTTriggerParentUUID" : "A94520F2-7284-422D-B17C-AAA3AE8E9778",
"BTTIsPureAction" : true,
"BTTTriggerClass" : "BTTTriggerTypeNormalMouse",
"BTTUUID" : "BEF89467-DF02-4173-AE51-1E689541C103",
"BTTPredefinedActionType" : 204,
"BTTPredefinedActionName" : "Activate or Bring to Front Window Under Cursor",
"BTTOrder" : 0
},
{
"BTTLastUpdatedAt" : 1743663213.7012911,
"BTTTriggerParentUUID" : "A94520F2-7284-422D-B17C-AAA3AE8E9778",
"BTTIsPureAction" : true,
"BTTTriggerClass" : "BTTTriggerTypeNormalMouse",
"BTTUUID" : "B2359A69-F6D8-4891-B3BD-3E0842CB97E8",
"BTTPredefinedActionType" : 71,
"BTTPredefinedActionName" : "Start Resizing",
"BTTOrder" : 1
}
],
"BTTGestureNotes" : "Start Resize with leftclick, shift and option, works together with below trigger"
}
]
[
{
"BTTLastUpdatedAt" : 1759266045.336823,
"BTTTriggerType" : 1000,
"BTTTriggerTypeDescriptionReadOnly" : "Leftclick (needs modifier key)",
"BTTTriggerTypeDescription" : "Stop Resize with leftclick, shift and option, works together with above trigger",
"BTTTriggerClass" : "BTTTriggerTypeNormalMouse",
"BTTUUID" : "2A6E0870-1669-4937-87B3-AF8057B4E4A7",
"BTTTriggerOnDown" : 1,
"BTTNotesInsteadOfDescription" : 1,
"BTTRequiredModifierKeys" : 655360,
"BTTOrder" : 3,
"BTTActionsToExecute" : [
{
"BTTLastUpdatedAt" : 1734437140.9852629,
"BTTTriggerParentUUID" : "2A6E0870-1669-4937-87B3-AF8057B4E4A7",
"BTTIsPureAction" : true,
"BTTTriggerClass" : "BTTTriggerTypeNormalMouse",
"BTTUUID" : "2AEAA3EE-3C23-490F-A70F-EA17DA2A3575",
"BTTPredefinedActionType" : 72,
"BTTPredefinedActionName" : "Stop Resizing",
"BTTOrder" : 186
}
],
"BTTGestureNotes" : "Stop Resize with leftclick, shift and option, works together with above trigger"
}
]
Just copy-paste these 2 triggers under "Normal mouse" which will allow resizing no matter where your cursor is (well it should be on the window you would like to resize).
To trigger it hold shift + opt + leftclick and start resizing. You can use only 1 modifier, just configure it here: