Keep proportion with tilemap ?

Hello, i'm using a tilemap for my 2D bomberman game. I wanted to set at the right of the map a panel where there are player informations. But the panel (which is in a canvas) and the tilemap are two separated things. So when i start changing the width and height with the "free aspect" those 2 are overlapping. Is there a way to set the tilemap like any other UI element ?

Thank you.