How do you lock a frame in Studio?

Im making a UI but it’s hard to edit the items under the background frame. How do you lock it like BaseParts in the workspace to where you cant select it in the viewport?

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Try this, if this doesn’t solve your problem I will try again.

this wouldnt solve the issue from 4 years ago

this isn’t a feature or property itself but holding ALT may do something? other than that there is a way to do this by making a plugin to add in this feature.