Pass the selected grid rows to a Custom JS Function https://ribbonworkbench.uservoice.com/knowledgebase/articles/129783-pass-the-currently-selected-grid-row-s-to-a-custo
Show or hide the Add New button on form sub-grid https://ribbonworkbench.uservoice.com/knowledgebase/articles/489288-show-or-hide-the-add-new-button-on-form-sub-grid
How To Refer multiple files JS in a ribbon or in JavaScript code http://crmonaroll.blogspot.it/2014/10/how-to-refer-multiple-files-in-ribbon.html?m=1
Create a Workflow Short Cut Ribbon Button https://ribbonworkbench.uservoice.com/knowledgebase/articles/132235-create-a-workflow-short-cut-ribbon-button-no-code