[maxshm]

Thank you for your feedback and advice!

Wow, it is great to meet a person here who knows about our main desktop software IP Video System Design Tool. To import a floor plan in the lens calculator the user can click on a small house button in the bottom of the screen. Yes the button is not in the toolbar.

This video shows how to import a background image 1:40 https://m.youtube.com/watch?v=NE7eTx1aPpg

[dang]

Posts without URLs get penalized, so I've linked the submission to your URL (the one that gets redirected to) and converted your text to a top comment.

[CamperBob2]

Also, consider adding tooltips -- I don't read hieroglyphics and have no idea what all those icons do.

[maxshm]

It is possible to add tooltips in a desktop version. But how to show them on a smartphone with touch interface?