Thanks @matw. I got that option and changed it. But I ran into another problem before solving it.
I saved some filters and then deleted some index. All of this I can't recollect exactly but can somewhat corelate now. Now all I can see is error for the index pattern. And I can't see any data even if I select any time range. Although elasticsearch query on 9200 port shows that data is there and Kibana also shows the same old indexes present.
Whatever I do (select any index, delete existing ones, upload new CSV with a new index), doesn't solve this problem. Its been hours googling and I came across a solution - Kibana show error index pattern - #11 by LeeDr
But I cannot apply it in my kibana. Can someone guide on how to do it on v 7.13.2 ?