In your jobs, you can use the Duplicate button to create a new group with these two jobs or to add the duplicated job to an existing group.
In the popup that opens, you will be able to select 'Create a group' if you're duplicating a job that doesn't already belongs to a group...
... Or to select 'Add this job to the group [name]' if you're duplicating a job that already belongs to a group.
