I want to create a dashboard which shows information about a limited set of request values :
request:(\"/path1\" OR \"/path2\" OR \"/path3\")
W
Definitely you can add OR filters in your dashboard. As dashboard is created from saved visualizations, In your visualization you can add filter containing OR which will reflect such data.
As per my understanding of your question I am posting my answer (Feel free to correct me):-
Hope it answers your question :)