Editing Slicers in Dashboard to Only Affect That Sheet's Graphs

Jpalaci1 

I'm certainly not a specialist when it comes to dashboards.

Some think, not only there ... :)))

... Anyway, here are some links that might help you.

Share Power BI dashboards and reports with coworkers and others

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Create and share a Dashboard with Excel and Microsoft Groups

Store your dashboard in the group

If you haven't already saved your dashboard workbook in the group you'll want to move it there. If it's already in the group's files library then you can skip this step.

1. Go to your group in either Outlook 2016 or Outlook on the web.

2. Click Files in the ribbon to access the group's document library.

3. Click the Upload button on the ribbon and upload your dashboard workbook to the document library.

Add it to your group's SharePoint Online team site

1. If you accessed the document library from Outlook 2016, click Home on the navigation pane on the left. If you accessed the document library from Outlook on the web, click More > Site from the right end of the ribbon.

2. Click Documents from the navigation pane at the left.

3. Find your dashboard workbook and click the selection circle just to the left of its name.

4. When you have the dashboard workbook selected, choose Pin to top on the ribbon.

Now whenever your users come to the Documents page of your SharePoint Online team site your dashboard worksheet will be right there at the top. They can click on it and easily access the current version of the dashboard.