To change the study's settings, open the study's settings by clicking on the settings gear wheel in the edit studies and strategies window.
The time frame for that instance of the indicator can be selected from the inputs: period drop-down menu.
To change the colors of the Multi Histogram labels, go to the Globals section of the settings. If you don't see the color swatches displayed, click on the reveal arrow to the right of Globals.
Click on any color swatch to change a color.
Multi Squeeze Pro - settings
How to Configure a Multi-Time Frame label study on TOS
About - Squeeze Pro