Hi @Arber Haliti
I will recommend you to use spfx to reach your requirement. You can refer to the following document to learn how to deploy a spfx webpart in sharepoint
https://learn.microsoft.com/en-us/sharepoint/dev/spfx/sharepoint-framework-overview
Then you can use the following spfx to add three workflow
https://github.com/pnp/sp-dev-fx-webparts/tree/main/samples/react-flow-button
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