It's possible to hide "Close" button by applying custom CSS style to the AutoGeneratedPageV2 schema. In this way you need to find the correct selector for "Close" button in AutoGeneratedPageV2.
The article by the link below describes how to add custom CSS:
I would recommend to use the Pre-Configured page instead of the Auto-generated page. You can decide which buttons display to the user. You can use conditions in the process based on the button the user clicks in the Pre-Configured page.
It's possible to hide "Close" button by applying custom CSS style to the AutoGeneratedPageV2 schema. In this way you need to find the correct selector for "Close" button in AutoGeneratedPageV2.
The article by the link below describes how to add custom CSS:
Actions button is located in BaseSectionV2 schema. You can hide it by overriding the element in the desired schema. For example here I hid it in AccountSectionV2: define("AccountSectionV2", [], function() {
Tag button is added in QuickFilterV2 schema. To remove it, you should debug the schema that I mentioned to understand how this button is added. Basically, you may simply remove rights on the tag object, so users will be unable to choose tags when click on the tag button.