Hi Yuval
Thank you for posting your question in the Lucid Community! While viewing a specific tab is possible with the Confluence integration it is not currently possible with the Notion integration. You can not specify a default page or pull only a specific page from your Lucidchart document as the Notion integration displays a mirrored copy of your Lucidchart document.
However we're always looking for ways to improve Lucidchart and our integrations and your feedback is the best way for us to do that. Would you mind adding your idea to our feature request form? Ideas submitted to this form are passed on to the product development team for their consideration.
Thank you for the idea! We appreciate you taking the time to let us know how we can be better for you and your workflow.