Hiding custom buttons from SharePoint column

Scenario: I have created an Power Automate instant cloud flow, linked to a custom button on a SharePoint column. The purpose of this automation and button is to send customers a PDF certificate once they have completed their training. The automation and process is working great, but I would like to tidy up the various buttons I have created, so that only one button is visible.

My question is....how can I remove the additional custom buttons from the rows in the SharePoint column circled in red below. I either want one button on one row of the column (highlighted yellow). Or to alternatively put the button up on the command bar instead. I know this can be done using custom views and JSON but I have been struggling to do this so far. Any guidance would be much appreciated.