Step1. Launch AOMEI Partition Assistant, right-click the partition which you want to allocate free space from, select “Allocate Free Space”.
Step2. In the pop-up window, we could specify the free space to be allocated and the destination partition that the free space will be added to.
Step3. View "Pending Operations" on the sidebar in case of corrections and then click "Apply" on the toolbar to execute pending operations.