Modified the plugin a little. - 1.0.2
Changed the menu.
Added a new function - Multi-Selection Isolate: isolates objects that are selected in different contexts (located at different levels of the hierarchy). Works slowly when there are a lot of such objects But sometimes it can select and isolate something that the usual function cannot.

@Rich-O-Brien I'm not allowed to post here in another way because I don't have enough reputation. Can't even chat back

I'm not allowed to post here in another way because I don't have enough reputation. Can't even chat back

I can't post anything here because it says I don't have a reputation. I can't even reply in the chat

Hello everyone.

I've created a plugin for isolating objects with a logic that I've always wanted. If you select some objects inside a group (deep down in the hierarchy), the plugin hides everything else at the current level. Then, it also hides everything up the hierarchy except for the parent groups. This way, you only get the selected objects, and nothing else is visible in the scene.

I've also added a button for standard isolation at the current level, as well as a function to do the opposite: show everything deeper in the hierarchy for the selected objects.

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