Restricting fields shown in selection tool

[shirleyc40]

Hello

I was wondering if it is possible to restrict the fields shown in the selection tool. On default, it shows all the dimensions loaded into the app, but if I just want to filter on either date, location, seller only, is it possible to have the selection tool only show those 3 options?

Update: I found out that you can show single Master Dimensions, but then I'm wondering if there is a way to show calculated dimensions. Like if I make month(eventDate) a master dimension, is there a way to show it in the selection tool

[QlikTom]

If you want to hide certain fields, not only from the selection tool, but from dropdown menus, and auto-complete you have a few options. 

https://help.qlik.com/en-US/sense/latest/Subsystems/Hub/Content/Sense_Hub/LoadData/hiding-fields-fro...

You can choose to hide fields from analysis in the Data Manager or you can use either of these variables in the data load editor (script):

• HidePrefix - https://help.qlik.com/en-US/sense/latest/Subsystems/Hub/Content/Sense_Hub/Scripting/SystemVariables/...
• HideSuffix - https://help.qlik.com/en-US/sense/latest/Subsystems/Hub/Content/Sense_Hub/Scripting/SystemVariables/...

Alternatively, in the data load script, you can use:

TAG FIELD <field name> WITH '$hidden';

This can even be combined with a mapping table stored externally.
https://help.qlik.com/en-US/sense/latest/Subsystems/Hub/Content/Sense_Hub/Scripting/ScriptRegularSta...

Some things to consider when hiding fields:
1) Fields will not be shown in interface elements in analysis, this includes the selection tool. Master Dimensions WILL display in the selection tool however, even if based on a hidden field. 

2) A user can still use a hidden field in expression if they know the exact name of the field, although auto-complete will not work and the field will not be highlighted in orange like usual. The expression will still validate as "OK" in the expression editor. 

3) If a user can view the data model, they will see all the fields. 

It is possible to develop your app and then go back and hide fields you don't wish users to see in analysis before publishing the app. I hope this helps!