95th Percentile Datasource
I've been asked to re-implement some monitoring that we used to aggregate from MRTG data, and I'm immediately baffled because it looks like there's a built-in datasource to do what we need (at leas...
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Likely, neither the datapoint, nor the AppliesTo need to be modified. Instead, you need to edit the graph. You're looking in the DataSource and that's the wrong "hood" to open up.
If i'm guessing right, you are on the Settings page, under LogicModules >> DataSources and you have the Impulse_Ethernet_64 Datasource highlighted in the middle pane (middle pane of three) and you see the DataSource settings on the right pane.
If that's the case, all you need to do is click the triangle next to the DataSource in the middle pane. This will open up two sub-options: "overview graphs" and "graphs". Overview graphs contains the definitions of graphs that appear when you select the DataSource when looking at the device. Graphs contains the graphs that display when you select an individual interface in the resource tree.
Your screenshot shows a graph, not an overview graph. So, if you expand "graphs" by clicking the triangle, you'll see the graph definitions there. Select the 95th percentile (last one in the list, they are sorted by display priority, which you can set). From there you'll see that it pulls in the InBps and OutBps datapoints from the DataSource. You'll want to add a new Virtual Datapoint that calculates the percentile. You'll then want to replace the lines that are currently graphed with your new virtual datapoint.