Which filter do you have to enable everytime? The map toolbar, or something else? By default, the map tools filter will show all features:
Also, you can set a filter as a data source within a widget (bar chart, summary, etc) and this should not need to be changed once the view is saved.
I have filters in the toolbar, by default it shows everything. I want to apply my custom filter by default (my time query filter) and its like 20+ filters (one filter per a layer) and its very cumbersome to ask my managers to check each one every time they load the dashboard. (browser dashboard).
Is there a better way to do this?
There isn't a way to do this within the map tool, but keep in mind, the filters on here are purely visual and do not influence other widgets (unless you are using map extent as a data source).
One thing that came to mind would be creating a different dashboard for each of them, with only the relevant information each would need for their area/KPI. You could organize them into a map series with each on separate tab.