Using Redistribute Free Space wizard, you can redistribute free space between two adjacent partitions.
To launch the wizard, open Wizards in menu bar and select Redistribute Free Space.
Select the pair of involved partitions. Click on the first (left) partition you wish to have resized. Right partition will be selected automatically.
If you wish to select the rightmost partition pair, click on the penultimate one.
Use “Left partition size” slider to set the size of the first involved partition.
The second involved partition will be resized automatically.
You can now preview your changes.
Press Apply operations, then – Apply.