How to make dropdown filter like this?

Question

I just want to make this kind of filter
see this image:
https://res.cloudinary.com/dmsehajlm/image/upload/v1727320110/odoo_dropdown_filter_z8y9yu.png [1]
I have searched in crm_lead_view.xml But I didn't find this kind of filter. can you help me with that?

[1] https://res.cloudinary.com/dmsehajlm/image/upload/v1727320110/odoo_dropdown_filter_z8y9yu.png

Anaghan Heri · Accepted Answer

Hello,
Please check. You need to apply optional="hide" in the tree view. If you want it to be shown by default and then hidden later, you can apply optional="show"

image [1]

[1] /web/image/55652885-06ecc1c4/image.png?access_token=aa05806a-9f9f-438b-b01f-227b74e30c8b

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