The "workflow" buttons are determined by the transitions available in the workflow.
I suspect what you're asking for is to see more buttons there before it pushes the transitions into the "workflow" drop-down? For example, have the first four transitions in buttons, instead of the default two?
If I'm right about the "more buttons", you can change it with a minor code tweak - https://confluence.atlassian.com/adminjiraserver070/advanced-workflow-configuration-749383189.html#Advancedworkflowconfiguration-customisingtransitionsonviewissue
If you're on Cloud, I think Atlassian will change it for you if you raise a support request.
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