As we know the trigger for any flow can be manual or automated (via webhooks trigger). I would like to know how can we create a manual trigger for our Custom Connector. The one similar to Sharepoint's For a selected file or Onedrive's for a selected file. I tried to look into documentation but it isn't available.
I think it can be triggered from other sources (webapps) using Flow sdk. Sharepoint and Onedrive are using the same thing. But the point is I just want to know how they created their own Manual trigger in Connector. "For a selected file" trigger is a manual triggered event which can be called from sharepoint website, and I digged in a little bit and found that they are using Flow sdk to call it.
Even I was also able to call my flows having sharepoint manual trigger from my website. But I can't make changes in their connector. So, I'm looking for a way to create my own manual trigger.