Hi, I use Openlab Chemstation, I would like to integrate the peak manually. How can I do?

Question

Hi, I use Openlab Chemstation, I put the schreeshot to show you what software it is. I would like to integrate the peak manually, draw the baseline not straight, but a bit curved is it possible to draw it slightly with the mouse or not? I have also put an image of the peak I would like to integrate. The red line below the peak is the blank, that I would like to use as a baseline to do the integration In case you have any suggestions on how I can best integrate it 
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Wolney Vasconcelos · Answer

Have you tried doing a blank subtraction? 
 Also, you can use events Integration ON and OFF and at the time of the event. 
 0.00 INTEGRATION OFF 
 3.4min INTEGRATION ON 
 4.0min INTEGRATION OFF. 
 In the integration window, there is also an icon for manual integration