Go to the Floorplan in the top right corner or on the left global toolbar.
Select Markings, click Show More, select Resize
Choose the marking from the drop down list
Either click and drag a corner of the marking to a desired size or enter the number of feet and inches or meters to increase or decrease the marking size by.
TIP: you can approximate the desired size and then change the numbers to the appropriate round number.
Click Submit
