Creating Merge Presets is done directly within the Merge dialog.
Steps to create a Merge Preset
Set up your merge actions
Choose "Save as Preset" from the bottom menu ("..."-button)
Enter a name and useful description.
The description helps other teammembers to quickly understand what will happen when they use this preset.
Scope - Each preset is only valid for the project it was created in.
Public - Presets are view- & reusable by other teammembers
Permissions - Anyone can create Merge Presets
Merging with Merge Presets
After you have created your first Merge Preset an additional menu will pop up when hovering the merge button.
Hover the merge button
Select the merge preset you'd like to apply (a preview dialog will appear)
Confirm that you want to apply the merge
Managing Merge Presets
Managing Merge Presets is restricted to project administrators to ensure that editing is done in a coordinated way.
The easiest way to manage existing Merge Presets is through a shortcut in the merge menu (only visible for project administrators).
You'll also find the managing screen for Merge Presets through the the Project Settings.
Editing Merge Presets
It's possible to edit and delete existing Merge Presets.
Restriction on Status Transition
It is not possible to amend the status transitions, since these are highly dependent on the context in which the preset was created:
Since this dialog is "out of context" (it could be any workflow, issue type, ..) all of the possible combinations within one project different all possible transitions amount to a large list.
It is highly likely that the user will not be able to find the correct transition from a large list ( all transitions for all workkflows for all issue types for all statuses ) and therefore restricted for now.