I need help on how to rezise a 2s sprite in unity 2019.3

I have a inventory system that works by space each item take different space but i need for a item when is taken to the toolbar to be rezide so that the images takes the shape of my slot instead of using the same size, please can someone help me or point me to the direction.

Fairly certain if you use tilemap component it supports that

No i did not use that, Its a regular sprite, do you have any idea how to rezise it

change scale of transform