Now after installing the software, it has to be open. As soon as you open it, you will have a window open that will have many tabs. You have to select the tab of the Physical disk from those tabs. After that, you will have to go to the Destination disk and select your Pendrive. Then after that, you have to click on Parts Manage out of the 5 options below.
After clicking on Parts Management, you will have another new window open in which you will be able to see how many partitions your Pendrive has. Right now, you will get only one drive letter which will be for your entire Pendrive, ie every size of your Pendrive will be the same partition of the same size.
Now to partition in Pendrive, you have to select the option of Re-Partition from the many options below.