Hello Guillermo
The people able to see the action button will most likely be based on:
1- Who is assigned to the task and the stage configuration
2- the condition defined on each action
I m assuming here you should check the stage assignees and attributes
Here some other links
YouTube video on workflow
https://www.youtube.com/watch?v=ePnjAbRD0is
OpenPages documentation on GRC worklfow
https://www.ibm.com/docs/en/openpages/9.0.0?topic=workflow-setting-up-grc
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Christophe Delauré
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