Go to the Setup, and search for Permission sets and select Permission Sets
Click “New” button
User will get the below screen, enter Label name, API Name will populate automatically, Click on Save button.
User will get the below screen, select object settings
User will get the below screen, select “Accounts” Object or whichever object user want to change the permission set
User will get the below screen, Click on Edit button
User will get the below screen, Under Object permissions check Read permission name, and Under Field permissions check All Forecast Spending and All Spending read access and click on save button
Note - Follow the same step for other object and field which requires permissions.