I haven't tried this my self but this is what the help says.
Dynamic data reduction
Qlik Sense supports the dynamic data reduction feature, by which some of the data in an app can be hidden from the user, based on the section access login:
- Fields (columns) can be hidden by using the system field OMIT.
- Records (rows) can be hidden by linking the section access data with the real data: The selection of values to be shown/excluded is controlled by having one or more fields with common names in section access and section application. After user login, Qlik Sense will attempt to copy the selections in fields in section access to any fields in section application with exactly the same field names (the field names must be written in UPPER CASE). After the selections have been made, Qlik Sense will permanently hide all data excluded by these selections from the user.
Search in help page doesn't provide the link.
Google search on your site provided the correct link.
Now, I tried this on the dashboard I created with following script
LOAD * inline [
ACCESS, USERID,REDUCTION, OMIT
NUM AS REDUCTION;
RecNo() AS NUM
FROM [lib://Sample (domain_lbabu)/Sample.csv]
(txt, codepage is 1252, embedded labels, delimiter is ',', msq);
This returns all records. Any pointers?
P.S: The demo script in the help works.